The Charles Hasler collection is comprised of printed ephemera, including greetings cards, cigarette cards, journals, invitations, books, exhibition catalogues, sales catalogues, prints, packaging, articles, books, business records, photographs, photocopies, manuscripts, slides, colour transparencies, newspaper clippings and journals and trade literature. There are also defined groupings of material, including designs and artwork, which usually relate to specific projects including: typography (contemporary and historical; particularly monotype), printing techniques (particularly colour), transport, Greenwich, architecture, wine, fashion, watercolour painting, book binding and photography. In addition, the collection includes material from the Ministry of Information campaigns during World War Two, including "Dig for Victory" and "Careless Talk Costs Lives" and material relating to the Festival of Britain, 1951.

Correspondence and papers of the Institute of Advanced Legal Studies (IALS) Secretary/Librarian, 1946-1984, primarily comprise a selection of the general and administrative files of K Howard Drake, with a small amount of correspondence of W A F P Steiner and J A Boxhall. 'British Museum' file, holding correspondence of Drake and Steiner, 1947-1972; 'General correspondence' file relating to Library acquisitions and binding, 1956-1967; 'General correspondence' file on cataloguing and indexing procedures, 1965-1967; 'International Association of Law Libraries: course in law librarianship, Luxembourg, 1966', Drake's file as President of the IALL, 1965-1966; 'International Association of Law Libraries: Uppsala, 1966', Drake's file as President of the IALL, 1965-1966; correspondence between Drake and Elizabeth Moys, Acting Librarian, University of Lagos and later of Glasgow University Library, 1962-1968; 'Nuffield Foundation', correspondence and papers relating to grants to the IALS Library, 1946-1970; 'Standing conference of librarians of the libraries of the University of London', correspondence, 1954-1969; 'University Grants Commission: annual returns', 1948-1965; 'Library policy', draft policy statements, background papers, Library Committee minutes, 1947-1984; correspondence with the Library, Osgoode Hall Law School, Canada, 1949-1961; lists of current legal research topics, 1949-1966; correspondence and papers relating to the K Howard Drake memorial fund, 1968-1975; Secretary/Librarian's telephone directory; printed Finding list of primary source materials for British and Irish Law held by London libraries compiled by W A Steiner (IALS, 1974).