Contains 47 autograph letters, mostly addressed to Amy Brandon Thomas. The materials date from 1900-1921, with a few letters from the late 1890s and 1930s-1950s. Also includes short handwritten letters, notes, telegrams, and cut signatures. Letters were written from an array of individuals in the English late 19th century performing scene, including such figures as Laurence Irving, Cyril Maude, Francis Edward James, Edward Rose, and Seymour Hicks.

Flyleaf of the autograph book contains a note addressed to Silvia, dated 1919. Photos depict various individuals in Silvia's childhood, including her father, friends, and ballet instructor Madame Zanfretta.