2008 Standard Catalog of Firearms. 18th edition
The Blue Book of Gun Values is copyrighted, and not available free on line. Your library may have a copy you can check out, but it gets updated each year.
You could try gunvalues.com
Blue Book of Gun Values
Blue Book of Gun Values
Blue Book of Gun Values is one
Blue book of gun values
Blue Book of Gun Values
On line auctions, Blue Book of Gun Values.
Blue Book of Gun Values
Blue Book of Gun Values
Blue Book of Gun Values, on line auction.
Blue Book of Gun Values
There is actually a publication called the "Blue Book of Gun Values." It is widely sold. You can also consult a reputable retail gun store for information on gun values.
Blue Book of Gun Values