- Expendable Elite: One Soldier's Journey into Covert Warfare by Daniel Marvin, 2006-08-01
- The Strength of the Wolf: The Secret History of America's War on Drugs by Douglas Valentine, 2006-10-17
- Let's Get Ready for Valentine's Day (Welcome Books: Celebrations) by Lloyd G. Douglas, 2003-02
- TDY by Douglas Valentine, 2000-10-02
- The Hotel Tacloban by Douglas Valentine, 2000-08-21
- The Strength of the Pack: The Personalities, Politics and Espionage Intrigues that Shaped the DEA by Douglas Valentine, 2010-11-15
- A Sniper's Journey: The Truth About the Man Behind the Rifle by Gary D. Mitchell, Michael Hirsh, 2007-01-02
- Okewood of the Secret Service by Valentine Williams, Douglas Valentine), 2010-07-20
- Applied Kinesiology: Muscle Response in Diagnosis, Therapy, and Preventive Medicine (Thorson's Inside Health Series) by Tom Valentine, Carole Valentine, 1985-10-01
- Biography - Valentine, Douglas (1949-): An article from: Contemporary Authors by Gale Reference Team, 2003-01-01
- THE HOTEL TACLOBAN. Based on the Recollections of His Father Douglas Valentine Snr. by Douglas Valentine, 1985
- The Yellow Streak by Valentine Williams, Douglas Valentine), 2010-10-26
- The Fox Prowls by Valentine, [Valentine, Douglas] Williams, 1943
- Twilight Hour by Douglas] Valentine [Valentine, 1945
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