Sources for the historical accounts include:
• "The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies," compiled by U.S. War Department.

• "The Last Full Measure: The Life and Death of the First Minnesota Volunteers, " by Richard Moe.

• "The First Volunteers," by John Quinn Imholte.

• "History of the First Regiment Minnesota Volunteer Infantry 1861-1864," by Return I. Holcombe.

• Gettysburg National Military Park; Minnesota Historical Society; and Ramsey County (Minn.) Historical Society.

• "28th Virginia Infantry," by Frank E. Fields Jr.

• "Nothing But Glory: Pickett's Division at Gettysburg," by Kathleen R. Georg, John W. Busey and Kathy Georg Harrison

• "'The Damned Red Flags of the Rebellion': The Confederate Battle Flag at Gettysburg" and "The Returned Battle Flags," by Richard Rollins.

• "Pickett's Charge in History and Memory," by Carol Reardon.

• Congressional Record; Virginia Historical Society; and Minnesota Historical Society.