This subseries contains invoices for books and some correspondence filed by the Heritage Book Shop by individual client name.

This subseries contains invoices from various years interfiled and separated into folders based on a book's subject or a specific author. These folders are collectively titled "subject/author files" in this finding aid, but may be titled under varying other names within each box.

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.