Emma Redington (Lee) Thayer (ca. 1874-ca. 1973) was the co-founder of Decorative Designers, a New York City based firm that produced binding designs, dust jackets, book illustrations, and advertising material. She specialized in conventionalized decorations and designed most of the bindings, did some lettering, and was successful at dust jacket illustrations. She also published over sixty mystery novels as well as children's books. The collection consists of material related to the work of Lee Thayer and the Decorative Designers (DD) including correspondence, taped interviews, articles and newsclippings related to the life and career of Thayer, dust jackets and novels by Thayer, and photocopied bookplate designs, binding designs, and dust jackets by DD.