Individual research record
Andrew Simeon Glasgow
c. 1868 – before 1946
Glasgow-2276 · 1 mapped association
At a glance
Identity & family
Tree links organise the family; documentary status still varies.
- Birth
- c. 1868 · Butterwood Township, Halifax, North Carolina, United States
- Death
- before 1946 · Place not recorded
- Parents
- Samuel Andrew Jackson GlasgowunmarkedRebecca (Butts) Glasgowunmarked
- Spouses
- Eva Reeves (Rawlings) Glasgow
- Children
- Clyde Gaslon Glasgow
- Gender
- Male
- WikiTree
- Glasgow-2276
- Research clusters
- Worldwide One-Tree profile leads
- Mapped descendants
- 1
Comparison context
These child positions and checks are the subject details used to rank possible parents below.
Naming sequence used by the parentage model
Known-position checks: 0 support · 0 conflict. Ordinals retain unnamed children and recognise reused names.
Relationship comparison
Potential parents or duplicates
Compare scored leads with the subject details above—not proof.
Possible fathers5 leads
Possible Father
Samuel Black GlasgowGlasgow-1847
- plausible 38-year parent-child age gap (+18)
- known spouse Anna Mary (Stever) Glasgow had a plausible maternal age (34) at the subject's birth (+7)
- candidate has only broad or undated birth-locality overlap: township (+6)
a different father is already linked but its evidence is unassessed (−15)
Show complete scoring
- plausible 38-year parent-child age gap (+18)
- candidate's birth is 85 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- candidate has only broad or undated birth-locality overlap: township (+6)
- same research cluster (+0; grouping is not kinship evidence)
- subject's birth fits between children attributed to the same parental couple (1859–1869) (+6; other parent Phebe Ann (Robertson) Glasgow)
- candidate has another child, Joseph Montgomery Glasgow, born 7 years from the subject in the same specific birth locality (+4; possible sibling-household clue)
- known spouse Anna Mary (Stever) Glasgow had a plausible maternal age (34) at the subject's birth (+7)
- candidate's other children share uncommon given names with the subject's recorded siblings: Anna +8 (23 public profiles); Eliza +8 (23 public profiles) (+20 total including +4 rare-name bundle bonus)
Deductions and cautions: a different father is already linked but its evidence is unassessed (−15)
Possible Father
John GlassgoGlassgo-3
- plausible 30-year parent-child age gap (+18)
- candidate has only broad or undated birth-locality overlap: north (+6)
- candidate's birth is 77 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
a different father is already linked but its evidence is unassessed (−15)
Show complete scoring
- plausible 30-year parent-child age gap (+18)
- candidate's birth is 77 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- candidate has only broad or undated birth-locality overlap: north (+6)
- same research cluster (+0; grouping is not kinship evidence)
- subject's birth fits between children attributed to the same parental couple (1858–1879) (+6; other parent Jane (Mitchell) Glassgo)
- same-couple children Geneva A Glassgo (1866) and John Glassgo (1869) bracket the subject in the same specific birth locality (+10; strong household-placement clue, not proof)
- the subject fills a 3-year gap between those same-couple, same-locality children (+4; corroborated missing birth-order slot)
- known spouse Jane (Mitchell) Glassgo had a bounded, possibly plausible maternal age (33) at the subject's birth (+3)
Deductions and cautions: a different father is already linked but its evidence is unassessed (−15)
Show 3 lower-scoring possible fathers
Possible Father
Edward William GlasgowGlasgow-3502
- plausible 30-year parent-child age gap (+18)
- known spouse Mary Barnhill (Moore) Glasgow had a plausible maternal age (24) at the subject's birth (+7)
- candidate has only broad or undated birth-locality overlap: north (+6)
a different father is already linked but its evidence is unassessed (−15)
Show complete scoring
- plausible 30-year parent-child age gap (+18)
- candidate's birth is 77 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- candidate has only broad or undated birth-locality overlap: north (+6)
- same research cluster (+0; grouping is not kinship evidence)
- another recorded child shares the subject's birth year (+2; possible twins or date uncertainty)
- candidate has another child, Edward Glasgow, born 0 years from the subject in the same specific birth locality (+6; possible sibling-household clue)
- known spouse Mary Barnhill (Moore) Glasgow had a plausible maternal age (24) at the subject's birth (+7)
Deductions and cautions: a different father is already linked but its evidence is unassessed (−15)
Possible Father
Henry Cunningham GlasgowGlasgow-3148
- plausible 38-year parent-child age gap (+18)
- known spouse Margaret (Knox) Glasgow had a plausible maternal age (31) at the subject's birth (+7)
- candidate has only broad or undated birth-locality overlap: township (+6)
a different father is already linked but its evidence is unassessed (−15)
Show complete scoring
- plausible 38-year parent-child age gap (+18)
- candidate's birth is 85 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- candidate has only broad or undated birth-locality overlap: township (+6)
- candidate has another child, Warren C Glasgow, born 10 years from the subject in the same specific birth locality (+4; possible sibling-household clue)
- known spouse Margaret (Knox) Glasgow had a plausible maternal age (31) at the subject's birth (+7)
Deductions and cautions: a different father is already linked but its evidence is unassessed (−15)
Possible Father
James GlasgowGlasgow-3673
- plausible 28-year parent-child age gap (+18)
- candidate's birth is 75 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- known spouse Ellen (Page) Glasgow had a bounded, possibly plausible maternal age (26) at the subject's birth (+3)
a different father is already linked but its evidence is unassessed (−15); same country, but no indexed locality overlap (−10)
Show complete scoring
- plausible 28-year parent-child age gap (+18)
- candidate's birth is 75 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- same research cluster (+0; grouping is not kinship evidence)
- another recorded child shares the subject's birth year (+2; possible twins or date uncertainty)
- known spouse Ellen (Page) Glasgow had a bounded, possibly plausible maternal age (26) at the subject's birth (+3)
- candidate's other children share uncommon given names with the subject's recorded siblings: Anna +8 (23 public profiles); Eliza +8 (23 public profiles) (+20 total including +4 rare-name bundle bonus)
Deductions and cautions: a different father is already linked but its evidence is unassessed (−15); same country, but no indexed locality overlap (−10)
Possible mothers5 leads
Possible Mother
Jane (Mitchell) GlassgoMitchell-42015
- plausible 33-year parent-child age gap (+18)
- candidate has only broad or undated birth-locality overlap: north (+6)
- candidate's birth is 80 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
a different mother is already linked but its evidence is unassessed (−15)
Show complete scoring
- plausible 33-year parent-child age gap (+18)
- candidate's birth is 80 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- candidate has only broad or undated birth-locality overlap: north (+6)
- same research cluster (+0; grouping is not kinship evidence)
- subject's birth fits between children attributed to the same parental couple (1858–1879) (+6; other parent John Glassgo)
- same-couple children Geneva A Glassgo (1866) and John Glassgo (1869) bracket the subject in the same specific birth locality (+10; strong household-placement clue, not proof)
- the subject fills a 3-year gap between those same-couple, same-locality children (+4; corroborated missing birth-order slot)
Deductions and cautions: a different mother is already linked but its evidence is unassessed (−15)
Possible Mother
Mary Barnhill (Moore) GlasgowMoore-97554
- plausible 24-year parent-child age gap (+18)
- candidate has only broad or undated birth-locality overlap: north (+6)
- candidate's birth is 71 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
a different mother is already linked but its evidence is unassessed (−15)
Show complete scoring
- plausible 24-year parent-child age gap (+18)
- candidate's birth is 71 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- candidate has only broad or undated birth-locality overlap: north (+6)
- same research cluster (+0; grouping is not kinship evidence)
- another recorded child shares the subject's birth year (+2; possible twins or date uncertainty)
- candidate has another child, Edward Glasgow, born 0 years from the subject in the same specific birth locality (+6; possible sibling-household clue)
Deductions and cautions: a different mother is already linked but its evidence is unassessed (−15)
Show 3 lower-scoring possible mothers
Possible Mother
Ellen (Page) GlasgowPage-21056
- plausible 26-year parent-child age gap (+18)
- candidate's birth is 73 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- same research cluster (+0; grouping is not kinship evidence)
a different mother is already linked but its evidence is unassessed (−15); same country, but no indexed locality overlap (−10)
Show complete scoring
- plausible 26-year parent-child age gap (+18)
- candidate's birth is 73 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- same research cluster (+0; grouping is not kinship evidence)
- another recorded child shares the subject's birth year (+2; possible twins or date uncertainty)
- candidate's other children share uncommon given names with the subject's recorded siblings: Anna +8 (23 public profiles); Eliza +8 (23 public profiles) (+20 total including +4 rare-name bundle bonus)
Deductions and cautions: a different mother is already linked but its evidence is unassessed (−15); same country, but no indexed locality overlap (−10)
Possible Mother
Mary (Lyle) GlascoLyle-581
- plausible 37-year parent-child age gap (+18)
- candidate's birth is 84 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- same research cluster (+0; grouping is not kinship evidence)
a different mother is already linked but its evidence is unassessed (−15); locality comparison is unavailable because one or both profiles lack adequate place data (no deduction)
Show complete scoring
- plausible 37-year parent-child age gap (+18)
- candidate's birth is 84 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- same research cluster (+0; grouping is not kinship evidence)
- subject's birth fits between children attributed to the same parental couple (1857–1872) (+6; other parent Thomas Glasco)
- candidate's other children share uncommon given names with the subject's recorded siblings: George +3 (61 public profiles) (+3 total)
Deductions and cautions: a different mother is already linked but its evidence is unassessed (−15); locality comparison is unavailable because one or both profiles lack adequate place data (no deduction)
Possible Mother
Phebe Ann (Robertson) GlasgowRobertson-21963
- plausible 39-year parent-child age gap (+18)
- candidate's birth is 86 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- same research cluster (+0; grouping is not kinship evidence)
a different mother is already linked but its evidence is unassessed (−15); same country, but no indexed locality overlap (−10)
Show complete scoring
- plausible 39-year parent-child age gap (+18)
- candidate's birth is 86 years before the subject's earliest dated child (1915), a compatible grandparent-generation interval (+4)
- same research cluster (+0; grouping is not kinship evidence)
- subject's birth fits between children attributed to the same parental couple (1859–1869) (+6; other parent Samuel Black Glasgow)
- candidate has another child, Joseph Montgomery Glasgow, born 7 years from the subject in the same specific birth locality (+4; possible sibling-household clue)
- candidate's other children share uncommon given names with the subject's recorded siblings: Anna +8 (23 public profiles) (+8 total)
Deductions and cautions: a different mother is already linked but its evidence is unassessed (−15); same country, but no indexed locality overlap (−10)
How parent leads are calculated
Automated leads use birth surnames—not married surnames—as parental eligibility, role-specific biological age limits, bounded and approximate-date uncertainty, household chronology, specific time-aware localities, mapped distance, tenancy succession, migration destinations and sex-aware Scottish naming positions across generations. People already attached as the subject's parents stay in the identity summary and are excluded from this alternative-candidate list, regardless of relationship confidence. The main calibration uses clues available on disconnected profiles; existing parent and sibling links are retained as comparison context rather than treated as transferable evidence. Common ordered names and grandparent-to-child echoes receive a small non-zero weight, so a John or James match can support several independent criteria without producing a lead alone. Rare names, repeated bearers and bundles across otherwise distinct branches receive substantially more weight according to catalogue frequency. An exact migration place is weighted by its rarity and repetition across both branches; a shared destination country is worth only one point. Extra weight is added only when at least three independent clue types converge: naming, locality, specific migration, household chronology or collateral networks. Sparse profiles retain a clearly labelled chronology-only fallback instead of disappearing. Countries, states, counties and research clusters do not count as a shared locality, and fallback, broad representative or kin-inferred coordinates are excluded from distance scoring. Shared descendant profiles are removed before branch-name comparison. A candidate already recorded as a parent-in-law is excluded. A confident or independently supported parent is treated as settled; uncertain and unassessed attachments remain open to alternative comparison. A different linked parent, an uncle/aunt or grandparent path, and a matching existing child profile prevent an alternative from being classified as a strong direct-parent lead until the underlying tree conflict or duplicate is resolved. Familiar forms such as Bessie are normalised. Surname remains an eligibility filter worth zero points.
Naming customs, shared farms and occupations are circumstantial. Children, spouses and collateral relatives may be missing, and tree-derived family networks are not independent evidence. Scores rank research leads; they do not prove parentage.
Same-name candidate
Andrew GlasgowGlasgow-3495
- same first and last name (+18)
record-derived birth estimates differ by 54; retained without deduction
Full comparison detail
- same first and last name (+18)
Conflicts: record-derived birth estimates differ by 54; retained without deduction
Same-name candidate
Andrew Jackson GlasgowGlasgow-742
- same first and last name (+18)
record-derived birth estimates differ by 38; retained without deduction
Full comparison detail
- same first and last name (+18)
Conflicts: record-derived birth estimates differ by 38; retained without deduction
How duplicate leads are calculated
Dates are eligibility gates, not merely deductions: chronologically impossible people are excluded. Dates, places, spouses, parent certainty and children's profiles and names are then compared. A high score is a prompt to inspect records, not a merge recommendation.
Open only what you need
Research & records
Life and record timelineChronological mapped occurrences and their underlying sources.1 record
Profile-stated birthplace: Butterwood Township, Halifax, North Carolina, United States
Butterwood Township, Halifax, North Carolina, United States
One-Tree export profile fields are search leads, not sources; relationships are shown only where the export supplies parent links.
Source and mapping detail
WikiTree profile export for Glasgow-2276
No sufficiently specific citation match found.
Precision: Country-centre fallback for profile locality
Evidence assessmentWhat is supported, uncertain or disputed in the current case model.16 claims
Documented or strongly supported
No claims in this category have been formally assessed.
Working hypotheses and conflicts
No claims in this category have been formally assessed.
Research questionsOpen problems, missing bridges and the next records to inspect.0 open
No formal open question is recorded for this person.
Sources and provenanceStructured citations and source-quality classifications.5 sources
Source or provenance: quality describes the record layer, not every conclusion drawn from it.
- derivative "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MW8S-VZR : 29 May 2021), A S Glasgow in entry for N B Hammel, 1870.
- derivative "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MCXM-K4Y : 14 January 2022), Simeon Glascow in household of Saml.a. Glascow, Butterwood Township, Halifax, North Carolina, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm .
- derivative "North Carolina, Center for Health Statistics, Vital Records Unit, County Birth Records, 1913-1922", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:ZZ7X-WLPZ : 11 May 2020), Andrew Simeon Glasgow in entry for Clyde Gaslon Glasgow, 1915.
- derivative "North Carolina, County Marriages, 1762-1979 ," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QP9G-N26Y : 9 March 2021), A S Glasgow in entry for Clyde Glasgow and Katherine Stansbury, 3 Sep 1946; citing Halifax, North Carolina, United States, p. , North Carolina State Archives Division of Archives and History; FHL microfilm .
- tree_only WikiTree profile export for Glasgow-2276
Technical profile and raw captureDataset metadata, machine dossier and captured WikiTree biography.Advanced
WikiTree profile information
Glasgow-2276
Andrew Simeon Glasgow
Updated 2022-06-10
Dataset: ONT_Glasco_2026-08-18T16_05.json · generated 2026-08-20
WikiTree biography, citations and relationship snapshot
Glasgow-2276 was captured 2026-08-07T09:54:35+00:00; WikiTree profile revision 2022-06-10.
Profile location claims
| Event | Date | Location | Status |
|---|---|---|---|
| birth | — | Butterwood Township, Halifax, North Carolina, United States | WikiTree profile field |
Immediate relationship snapshot
| Relationship | Person | WikiTree ID | Dates and places returned |
|---|---|---|---|
| Parents | Samuel Andrew Jackson Glasgow | Glasgow-2277 | 1831-00-00 · North Carolina, United States · 1898-00-00 |
| Parents | Rebecca Glasgow | Butts-2296 | 1838-00-00 · North Carolina, United States · 0000-00-00 |
| Children | Clyde Gaslon Glasgow | Glasgow-2275 | 1915-03-14 · Halifax, North Carolina, United States · 2007-07-18 |
| Siblings | Charley Glasgow | Glasgow-2278 | 1857-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | Sarah Glasgow | Glasgow-2279 | 1859-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | Pattie Glasgow | Glasgow-2280 | 1861-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | Anna Glasgow | Glasgow-2281 | 1865-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | Eliza Glasgow | Glasgow-2282 | 1867-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | George Glasgow | Glasgow-2283 | 1869-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | Nannie Glasgow | Glasgow-2284 | 1873-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | Moses Glasgow | Glasgow-2285 | 1873-01-09 · North Carolina, United States · 1961-12-28 · Roanoke Rapids, Halifax, North Carolina, United States |
| Siblings | Lavina Glasgow | Glasgow-2286 | 1876-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | Affie Glasgow | Glasgow-2287 | 1878-00-00 · North Carolina, United States · 0000-00-00 |
| Siblings | Sandy Glasgow | Glasgow-2288 | 1880-00-00 · North Carolina, United States · 0000-00-00 |
| Spouses | Eva Reeves Glasgow | Rawlings-1828 | 1875-08-01 · Halifax, North Carolina, United States · 1946-04-06 · Butterwood Township, Halifax, North Carolina, United States · 0000-00-00 |
Record-bearing passages
BiographySources
- "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MW8S-VZR : 29 May 2021), A S Glasgow in entry for N B Hammel, 1870.
- "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MCXM-K4Y : 14 January 2022), Simeon Glascow in household of Saml.a. Glascow, Butterwood Township, Halifax, North Carolina, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm .
- "North Carolina, Center for Health Statistics, Vital Records Unit, County Birth Records, 1913-1922", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:ZZ7X-WLPZ : 11 May 2020), Andrew Simeon Glasgow in entry for Clyde Gaslon Glasgow, 1915.
- "North Carolina, County Marriages, 1762-1979 ," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QP9G-N26Y : 9 March 2021), A S Glasgow in entry for Clyde Glasgow and Katherine Stansbury, 3 Sep 1946; citing Halifax, North Carolina, United States, p. , North Carolina State Archives Division of Archives and History; FHL microfilm .
Profile source citations
- "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MW8S-VZR : 29 May 2021), A S Glasgow in entry for N B Hammel, 1870. source link 1
- "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MCXM-K4Y : 14 January 2022), Simeon Glascow in household of Saml.a. Glascow, Butterwood Township, Halifax, North Carolina, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm . source link 1
- "North Carolina, Center for Health Statistics, Vital Records Unit, County Birth Records, 1913-1922", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:ZZ7X-WLPZ : 11 May 2020), Andrew Simeon Glasgow in entry for Clyde Gaslon Glasgow, 1915. source link 1
- "North Carolina, County Marriages, 1762-1979 ," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QP9G-N26Y : 9 March 2021), A S Glasgow in entry for Clyde Glasgow and Katherine Stansbury, 3 Sep 1946; citing Halifax, North Carolina, United States, p. , North Carolina State Archives Division of Archives and History; FHL microfilm . source link 1
Full captured biography text
BiographySources * "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MW8S-VZR : 29 May 2021), A S Glasgow in entry for N B Hammel, 1870. * "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MCXM-K4Y : 14 January 2022), Simeon Glascow in household of Saml.a. Glascow, Butterwood Township, Halifax, North Carolina, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm . * "North Carolina, Center for Health Statistics, Vital Records Unit, County Birth Records, 1913-1922", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:ZZ7X-WLPZ : 11 May 2020), Andrew Simeon Glasgow in entry for Clyde Gaslon Glasgow, 1915. * "North Carolina, County Marriages, 1762-1979 ," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QP9G-N26Y : 9 March 2021), A S Glasgow in entry for Clyde Glasgow and Katherine Stansbury, 3 Sep 1946; citing Halifax, North Carolina, United States, p. , North Carolina State Archives Division of Archives and History; FHL microfilm .
Raw WikiTree biography markup
== Biography == == Sources == <references /> * "United States Census, 1870", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MW8S-VZR : 29 May 2021), A S Glasgow in entry for N B Hammel, 1870. * "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MCXM-K4Y : 14 January 2022), Simeon Glascow in household of Saml.a. Glascow, Butterwood Township, Halifax, North Carolina, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm . * "North Carolina, Center for Health Statistics, Vital Records Unit, County Birth Records, 1913-1922", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:ZZ7X-WLPZ : 11 May 2020), Andrew Simeon Glasgow in entry for Clyde Gaslon Glasgow, 1915. * "North Carolina, County Marriages, 1762-1979 ," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QP9G-N26Y : 9 March 2021), A S Glasgow in entry for Clyde Glasgow and Katherine Stansbury, 3 Sep 1946; citing Halifax, North Carolina, United States, p. , North Carolina State Archives Division of Archives and History; FHL microfilm .