Pueblo Grande Museum Auxiliary, is an organization whose purpose is to bring together people with an interest in the conservation and preservation of prehistoric resources, specifically, the heritage of Arizona prehistory and that of the Salt River Valley; to assist Pueblo Grande Museum and staff in dispersing educational materials; to provide lecturers and tour guides; to assist in the preparation of exhibits, library cataloguing and management, collection management, curatorial and conservation techniques, records management and research; and to organize, publicize and promote activities, events and fund raising for the Pueblo Grande Museum.