He has a monthly column in "Guns and Ammo" magazine known as "Cooper's Corner." But I highly recommend his two books: "The Gargantuan Gunsite Gossip" which is a huge collection of quotes on guns, the so called gun culture and the real America. Also, "To Ride, Shoot Straight, and Speak the Truth" I have them both and treasure them to the point that I don't loan them, ever. I think the first may be out of print, but the second is probably available. I bought Gunsite Gossip at a gunshow and the other at a bookstore.
I seriously doubt he was ever a CIA operative. He evinces a lot of distaste for that crew and the intelligence field in general.
Consider a "Cooperism" from Gunsite Gossip: "Blessed is he, who in the face of death, thinks ONLY of the Front Sight."
Lt. Col. Served in Korea and in WW-II, in the Pacific theater. IIRC, He has a "kill" with a 1911A1. It was in Korea, from a moving jeep I believe. :)
His Commentaries are available on several websites. The one I have bookmarked is http://www.dvc.org.uk/~johnny/jeff/. : another ishttp://www.molonlabe.net/Commentaries/
A whole list of links to the commentaries can be found on Father Frog's page Read about Lt. Col. Cooper here or here