| Sources |
- [S40335] 1930 census, Minnesota, Hennepin county, Year: 1930; Census Place: Independence, Hennepin, Minnesota; Page: 3A; Enumeration District: 0290 (Reliability: 3).
- [S3041] Birth index, Minnesota, Name: Donald Lowell Offerman Birth Date: 31 Oct 1928 Birth Place: Hennepin, Minnesota, USA Father's Surname: Offerman Mother's Maiden Name: Loraas Certificate Number: 1928-10620 (Reliability: 3).
- [S56029] Cemetery index, Glen Haven Memorial Gardens, Crystal, Hennepin, Minnesota, (Find-a-Grave).
- [S53767] Marriage index, Minnesota, Name: Donald L Offerman Marriage Date: 2 Feb 1949 Marriage Place: Hennepin, Minnesota, USA Spouse: Mae C Havelka Certificate Number: 5590191 (Reliability: 3).
|