Sources
1. Jewell Robert Benson, July 1, 1941.
Holmgren Family Tree
2. “Letter from Aunt Emma Helzer,” 3/15/1981.
3. “Regimental Descriptive Rolls 1861-65, 1st Cav Series No 31/1/29,” Microfilm, Wisconsin State Historical Society.
4. “Certificate of Service,” 1890, Certificate, Wisconsin War Veterans Memorial Museum.
5. “Veterans Census, NE,” 6/1/1890, Ed359.
6. Portrait and Biographical Album of Champaign County, Illinois, Chapman Brothers (Chicago, 1887), 396-398, 1887.