| Person Source | | Alvin Leonard Nelson had person sources.1 |
| Residence | | He lived in IowaBG. |
| Residence | | He lived in Jasper, IowaBG. |
| Birth | 7 April 1915 | He was born on 7 April 1915 in Marshalltown, Marshall, Iowa, USABG. |
| Baptism | 4 July 1915 | He was baptized on 4 July 1915 in Marshalltown, Iowa, USABG. |
| Residence | 1920 | He lived Relation to Head: Son; Residence Marital Status: Single in Marshall Ward 3, Marshall, Iowa, USABG, in 1920. |
| Residence | 1 January 1925 | He lived Marital Status: Single; Relation to Head of House: Son in Marshalltown Ward 3BG on 1 January 1925. |
| Residence | 1 January 1925 | He lived in Marshalltown Ward 3BG on 1 January 1925. |
| Residence | 1930 | He lived in Marshalltown, Marshall, IowaBG, in 1930. |
| Residence | 1 April 1940 | He lived in Dawson, Dallas, Iowa, United StatesBG, on 1 April 1940. |
| Marriage | 22 June 1940 | He and Ardena J Quire were married on 22 June 1940 in Lynnville, Iowa, USABG.2 |
| Military | 5 January 1943 | He served in the military on 5 January 1943 in Camp Dodge Herrold, IowaBG. |
| Military | 1 June 1945 | He served in the military on 1 June 1945. |
| Residence | 4 August 1949 | He lived in Lake City, Iowa, USABG, on 4 August 1949. |
| Death | 7 December 1987 | He died on 7 December 1987 at age 72 in Clear Lake, Cerro Gordo, Iowa, USABG. |