Congo Life and Folklore - John H. Weeks

We Stand on Their Shoulders - Ashton Thomas

U.S. Marine Corps Rifle Marksmanship Manual (MCRP 8-10B.2 / MCRP 3-01A) - United States Marine Corps

U.S. Army Reconnaissance and Surveillance Manual (FM 34-2-1) - United States Army

U.S. Army Survival, Evasion, and Recovery Manual (FM 21-76-1) - United States Army

U.S. Army Survival Manual (FM 21-76) - United States Army