I have recently required an Edwin Forbes etching plate 14, 19, 2, and 6. Three of them are signed. Included with it is the porfolio /book cover for Life Studies of the Great Army. I can not find the value of Plate 14. Is this rare? I have seen references to it but none for sale to compare value. In truth I want to know more information about this find.
The National Archives does not appraise or look at privately owned documents or artifacts. To find an appraiser in your area, you may wish to contact the ABAA (Antiquarian Booksellers Association of America). Good luck!