This subseries contains invoices for items sold by the Heritage Book Shop to other bookstores, libraries, universities, and individuals. The subseries also contains folders of consignment sale invoices, invoices from joint sales with E. Joseph Bookseller and James Cummins Bookseller, and other invoices. Not all years have a complete range of alphabetical files, and a few years are missing.

This series contains folders with general correspondence, pamphlets, and lists of books sold at book fairs ranging from 1981 to 2007. The series also includes organizational correspondence from the California Book Fair of 1974, in which the Weinsteins were partly responsible for arranging.

This subseries contains correspondence of various types, including client correspondence, client inquiries, correspondence related to membership and leadership roles in the ABA (American Booksellers Association) and ABAA, joint sales correspondence, interest queries, appraisals, and financial correspondence. Joint sales correspondence includes letters to and from the Heritage Book Shop and other booksellers with whom they sold books jointly, including Kenneth Rendell.

This subseries contains files concerning manuscripts, autograph galleries, and maps. The folders contain descriptions, lists, and stock files for each of the three collection types.

This subseries contains a wide variety of material on different topics, such as bindery accounts, magazine articles, papers about the Weinsteins, information about the Place des Antiquares, and other files.