||The Civil War letters of Major William G. Thompson of the 20th Iowa Infantry Regiment
||Thompson, William G
Bearss, Edwin C
||Washington County Historical Society (AR)
|Thompson, William G, and Edwin C Bearss. The Civil War letters of Major William G. Thompson of the 20th Iowa Infantry Regiment. (Fayetteville, Arkansas: Washington County Historical Society (AR), 1966).|
Available at the Family History Library.