- Marcot, Roy. U.S. Sharpshooters: Berdan's Civil War Elite
- Stevens, C.A. Berdan's United States Sharpshooters in the Army of the Potomac 1861-1865
- Sword, Wiley. Sharpshooter: Hiram Berdan, His Famous Sharpshooters and Their Sharps Rifles.
- Katcher, Phil. Sharpshooters in the Civil War 1861-1865.
Welcome to the Co. D Research Library
In Company D, we are dedicated to researching and compiling as much information about Company D, Berdan Sharpshooters, and Civil War life as possible.