The Georgia Civil War Manuscript Collections at the state archives contains the reminiscences of several men from this regiment:
Andrew Jackson Baldwin, Company D. Reference Drawer 283, Box 16.
James E. Blackshear, Company A. Reference Drawer 283, Box 218.
Cumming, John B.-Captain Company A, Georgia 20th Infantry Regiment May 17,1861. Elected Lieutenant Colonel September 5,1861; Colonel March 7,1862. Resigned May 29, 1863. Elected Colonel of the 5th Regiment Ga. Reserve Inf. June 8,1864. Captured at Macon, Ga. April 20-21, 1865.
The roster of this regiment contains the names of 2110 men. These names are not currently included in the index.