You can start with these, the main books to have.

1) Randall Made Knives The History of the Man and the Blades by Robert L. Gaddis. **Note this book is a must have, the "bible" if you will.

2) Randall Knives in Wartime Robert Hunt
3) Randall Military Models Robert Hunt
4) Randall Knive Rare, Unique, and Experimental Robert Hunt
5) The Randall Chronicles Pete Hamilton and Tom Clinton

There are a few others authored by Wickersham, Beaucant, and Silvey - Knives of the Viet Nam War