This subseries consists of two boxes of correspondence to Ralph Rodgers and a few items addressed to both Ralph and Mary Ann (his wife). Some of it is business-related such as form letters from the Circus Hall of Fame and the Chamber of Commerce in Peru, Indiana. One folder contains thank-you notes from school groups and other organizations who "toured" Ralph Rodgers' miniature circus in his back yard in El Cajon, California. The bulk of the series, however, consists of personal correspondence from friends--mainly other circus enthusiasts--including "Diamond Jim" Parker, a fellow model-builder-- but also a famous clown and circus historian who kept in frequent contact with Rodgers.