I was searching for Wiley Britton's "Memiors of the War of the Rebellion 1863" which is online at several sites. If you haven't read it, I highly recommend it.

On Google Books there are icons for similar books on the lower left and I ran across a couple that I found interesting and wanted to share.

Kansas in the sixties‎
by Samuel Johnson Crawford
http://books.google.com/books?id=j3XUNntC9CMC&printsec=frontcover

Chapters V, VIII, and X describe events in the Indian Territory.

Reluctant cannoneer: the diary of Robert T. McMahan
http://books.google.com/books?id=tdJi8wS-5y8C&printsec=frontcover#v=onepage&q=&f=false

Chapter 3 is about the Indian Expedition including Doubleday's "pre-expedition".

Ken