An Illustrated History of Bayonets by Martin J. Brayley
I was in Ollies yesterday and located a hard bound edition of this book for $9.99. I didn't even know there was a hardbound edition.
My paperback copy is getting really dogeared as I take it everywhere so this was perfect for me. There was only one in the store that I could find but if you have an Ollies nearby, might be worth checking.
I love the book. Nice color photos that show a lot of the markings. It's not as detailed as some but for a casual collector such as myself, it does the job.