The Essential Sharpshooter Library

The Sharpshooter Bookshelf.  Many Civil War era books are available for free on Google books.

1. Unfortunate Soldiers Sadly Sold
2. Marcot, Roy M. (2007) U.S. Sharpshooters:  Berdan's Civil War Elite
3. Sword, Wiley (1988) Sharpshooter: Hiram Berdan, his famous Sharpshooters and their Sharps rifles.
4. Katcher, Philip (2002) Sharpshooters of the American Civil War
5. Stevens, Charles Augustus (1892) Berdan's United States Sharpshooters in the Army of the Potomac.
6. U.S. War Department (1863) The 1863 Laws of War
7. Kautz, August (1865) The 1865 Customs of Service for Non-Commissioned Officers and Soldiers
8. U.S. War Department (1863) The 1863 U.S. Infantry Tactics
9. Early, Gerald. (2009) Second United States Sharpshooters in the Civil War
10. Killers in Green Coats