Series IV divided in three sub-series; plants, people, and digital files. Most of the bromeliad cultivar photographs and registrar's files are stored in either floppy discs or CD-ROMs. Only one folder contains photographs of Bromeliad Society International members; such as Mulford B. Foster, Ella Kelly and Victoria Padilla.
This box album contains original photographs of bomber crews, North Africa, post-war reunions, and post-war commemorations. Photographs include three taken on May 31, 1943 of Winston Churchill during his trip to Algeria.