Have you contacted Acequia Booksellers?
I haven't, but will follow up. Thanks for the tip.
Since you've said 'antique books', perhaps a book dealer would be a better choice to help you determine the real value than an antiques dealer. I wholeheartedly recommend Jerry Lane at the Book Stop.
Under Charlie's Covers in Bernalillo, a used book shop, has a section of Antique books and first editions - maybe they could help...
Under Charlie's Covers
120 E. Highway 550
Bernalillo, NM 87004
Call or visit Gary Wilkie at Acequia Books 4019 4th NW (between Candelaria and Griegos)
890-5365. Beware: you'll be tempted to leave with a few choice books.
Simmons and Simmons Books in East Nob Hill are also a good resource...