It is new according to the listing on e-bay. I do not see an author. It is a pocket size book.
Ok. I found the listing on eBay. While it doesn't list an author, after skimming through the multiple pages of BS about the book that is at the bottom of the listing, I have come to the conclusion that it is another price guide put out by Robert Vance and sold by Hurtzel trap company.
If that is true, then the only thing that is good about this Blue Book is that it will fit in your pocket. I'm not sure if I would invest 29.95 in it or not. ..........