Primarily incoming letters from Steven's friends and colleagues in the entertainment industry, many from vaudeville stars and actors he interviewed and wrote about. The Family subseries includes correspondence between Stevens and his wife Kay Ashton-Stevens and other family members including his brother Landers. Correspondence is incoming in both subseries unless otherwise noted.

Primarily incoming letters from Steven's friends and colleagues in the entertainment industry, many from vaudeville stars and actors he interviewed and wrote about. The Family subseries includes correspondence between Stevens and his wife Kay Ashton-Stevens and other family members including his brother Landers. Correspondence is incoming in both subseries unless otherwise noted.