The collection has been kept in the order Nolen originally provided, cataloged by number. All un-numbered items have been placed at the end of the collection. We have attempted to provide brief, topical descriptions of the materials within a certain numbered category. Nolen also kept an alphabetical card catalog of his materials. An item can be looked up by subject, author, title, etc., and the corresponding number where the item can be found is provided. This card catalog is available for use, and is listed as box 24.