| Sources |
- [S67163] 1910 census, Minnesota, Chippewa county, Year: 1910; Census Place: Montevideo Ward 1, Chippewa, Minnesota; Roll: T624_693; Page: 8A; Enumeration District: 0018 (Reliability: 3).
- [S3041] Birth index, Minnesota, Name: Robert Menton Lawrence Birth Date: 5 Jun 1906 Birth Place: Chippewa, Minnesota, USA Father's Surname: Lawrence Mother's Maiden Name: West Certificate Number: 1906-04019 (Reliability: 3).
- [S53585] SSDI: Social Security Death Index, Name: Robert M. Lawrence Social Security Number: 469-07-7781 Birth Date: 5 Jun 1906 Issue Year: Before 1951 Issue State: Minnesota Death Date: 30 Jun 1992 (Reliability: 3).
- [S27363] Genealogy of the descendants of William Haskell and Mary Tybott, (compiled by Marion S. Anderson for the Haskell Family Association).
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