Remember that if you are inquiring about value, the dealer may have to spend some time researching the material and some may charge for the service. Poster and Military Ephemera Dealers These links and lists are by no means exhaustive. While few book dealers handle military posters and other printed ephemera, most are a wealth of information and those who specialize in military literature probably know someone who does. Contact a good local used and rare book dealer in your area. If they cannot help you, ask if there is a directory of local booksellers.
Dealers often belong to a regional association which puts out a subject guide to members.
There should be a military specialist in your area. Check your local library for one of the numerous guides and directories of used and antiquarian book dealers. There may also be guides to antique ephemera and collectibles dealers. While most of the dealers handle more high end material, they are a knowledgeable group and one of your local members may lead you to someone able to sell you material or to appraise what you own. Post a request to a book dealer e-mail listserv or bulletin board, such as the ABAA Discussion Board .