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

This subseries contains lists of books by subject category, miscellaneous lists of books, and lists of books contained in designated collections. Collections listed here range from materials assembled by private collectors to collections of related items assembled by the Heritage Bookshop.