Best knife book?

[Herb Walsh]

I want to purchase a guide book on knives that includes pictures and values. My encounters with knives will be at flea markets, garage sales, estate sales etc. so the information needed will be for manufactured knives; mostly pocket knives and some military fixed blades. I don't need coverage of custom knives. I have an older issue of Levine's Guide that I use and I saw a book a friend had that looked ok and I believe it was published by Blade? I also have Coles III. Anyway, some recommendations please. Thanks.