The correspondence series include letters to Florence Pretz Smalley and her family members.

Correspondents include: Ed Wynn (an actor seeking input from FPS about his performance in "The Billiken Freshmen, 11-19-1909); David Spratt of the Billiken Club of South Philadelphia (asking about the history of the Billiken, 9-15-1911); Mr. Pretz's response to E. Wandless (about royalties owed to his daughter, 9-29-1914); Sara from Vanity Fair/Vogue Co. (3-7-1919); and a letter to Jane, Florence Pretz Smalley's daughter (10-6-1991).