This is great and I will post more than I should probably. I am surprised that MB did not post more.
No particular order.
1) A rifleman went to war - Herbert McBride, many interesting and useful views on battle, from WW1.
2) You can't miss, John Shaw/ Michael Bane, not sucking up, but a great introduction into competition pistol shooting, and the basics still apply, good pics although dated.
3) No 2nd place winner, Bill Jordan, again basics, and attitude, an insight into how the law enforcement brotherhood works.
4) Fast and fancy revolver shooting, Ed McGivern, Jerry Miculek read it, absorbed and became it, only better.
5) Most of Uncle Jeff, especially the ultra thin, Principles of personal defense.
6) Successful shooting, Pullam and Hannenkrat, position shooting, gear choice, and MIND SET.
7) Can't find it, ( not the title ) AR15 book by Derek Martin. ( accuracy speaks ) great read for US Service rifle shooters, or any one who wants to build and feed a very accurate AR.

Gunsmith Kinks, volumes 1-4, great info on all things gunsmith related.
9) The Military and Police sniper - Mike Lau, who built my, M40"s.