Collection consists of first issues of stamps, postcards, comics and other materials related to Blair Henshaw’s collecting and AIDS-awareness advocacy work. Collection has been arranged into the following five series: Stamps and related records (1988–[before 2002]), Postcards, posters and phone cards (1983–[before 2002]), Exhibition records (1993–1999), AIDS on Stamps project files [199-]–2003 and Correspondence (1993–2002).

Collection consist of books, newspaper clippings and photographs related to the life of de Mishaegen, and letters from de Mishaegen to de Trémaudan. Books by both women are included.