I just did a quick look-through of my copy to remind myself of what's in it. The knives shown/drawn on the couple pages are pretty good. But they would best be described as "bowies and butchers". They are OK, just fairly limited compared to what was actually available during the fur trade.
A much better book (booklet) would be the FUR TRADE CUTLERY SKETCHBOOK by James A Hanson put out by The Museum of the Fur Trade in Chadron Nebraska. They also put out a Quarterly journal all about the fur trade with scholarly articles from fairly well known and respected historians. The Sketchbook only had 47 pages, but are knives shown are base on documented originals that the Musuem has handled.
There are two books you might be interested in finding. My copies are out on loan, but they are (if I can remember correctly)
American Primitive Knives by Minnis. And a book by Madison Grant also called Primitive Knives or something like that.
A more scholarly book to check out would be American Knives by Harold Peterson.
I'd have isbn numbers and proper names/authors, but my copies are out on loan at the moment.
You also should check out the Trade Goods of New France web site.
http://www.lanouvelle-france.com/
Kevin shows lots of pictures of original trade knives - with dimensions and where they were found/recovered. Both fixed blade and folding knives. His site also covers flint strikers, trade kettles, trade axes, and even muskets. Great site!
I hope this helps.
Mikey - yee ol' grumpy blacksmith out in the Hinterlands