This sheet music is for the song “I Wonder What's Become of Sally” with lyrics written by Jack Yellen and music composed by Milton Ager. Ager, Yellen, and Bornstein Inc. of New York City published this sheet music in 1924. The cover’s illustration is signed by Perrer, and there is an inset photograph of Gus Van and Joe Schenck in the center of the cover. Van & Schenck were a vaudevillian singer and comedy duo who were very popular in the early 20th century.