Letters from Edward George Boulenger to Joan Procter regarding Salamander larvae, attendance at Zoological Society of London Scientific Meetings, the purchase of alligators, the transformation of axolotl, snakes for sale, a reference to a crab-eating frog, her exhibition of the batrachia in the public galleries, and the death of reptiles deposited by Joan Procter

Letters from Eric Burrows regarding tickets for entrance to London Zoo, and congratulations on her appointment. He had found food for her salamanders when Joan Procter lived at Kensington

Letter from W Claud Harris regarding a Salamander which was sent to Joan Procter

Letter from Cecilia Payne to Joan Procter a request to see Procter before she goes to college, and Procter's work on Salamanders

Correspondence between Philadelphia Zoo and George Soper Cansdale regarding the importation of Salamanders for the Pathology Department of Ancoats Hospital