The book blogosphere put forth not one but two articles in the past week on book collecting for beginners (cheers all around).

Special Collections
(252) 399-6504
Contains materials with a special emphasis on British and Scottish culture.
Appraisals
(702) 778-1216
Books, manuscripts, map appraisals,
accredited member American Society of Appraisers
Book Dealer: Antiquarian & Rare
(734) 995-1891
Polar exploration, literary first editions, children's books, photography.