Antiquarian Booksellers' Association of America

The ABAA is a trade association of rare booksellers founded in 1949.
 
The mission of the ABAA is to promote ethical standards and professionalism in the antiquarian book trade, to encourage the collecting and preservation of rare and antiquarian books and related materials,to support educational programs and research into the study of rare books, and to facilitate collegial relations between booksellers, librarians, scholars, and collectors.