"Early's Fall": A first novel by Jerry Peterson, set in 1949 Kansas.

http://www.amazon.com/Earlys-First-Edition-Mystery-ebook/dp/B003RWSB22/ref=sr_1_2?s=digital-text&ie=UTF8&qid=1377009110&sr=1-2&keywords=early%27s+fall

This novel follows Riley County Sheriff James "Cactus" Early as he chases a bank robber and investigates a murder. The 1940's west is nicely recreated in a smooth flowing narrative with plenty of folksy dialogue.

This was my grandfather's west that I saw so briefly as a child. The book deserves a read if you enjoy our "old" west.