The original radio show writer, Ben Friedman, couldn't write lyrics because he didn't understand meter. So Schwartz did the operas which appeared in a small illustrated booklet with the lyrics. These essentially children's operas were each recorded on a pair of 78rpm vinyl disks. Schwartz owns one of the operas. The other has disappeared into Superman limbo but is rumored to be well known on a recently discovered galactic colony of Krypton where the songs are frequently crooned by women to their children.
Collectors take note.
He was subsequently appointed to an advisory committee of the American Association of Advertising Agencies. Schwartz wrote extensively outside of comics. He authored three novels for Arco Press, one of which, Sword of Desire, a detective story, won praise for its successful takeoff on Reichian orgone therapy, a popular psychotherapeutic technique during the 40s and 50s. His novel, The Blowtop was published by Dial in 1948. His novel, No Such Mirrors, about NY's abstract expressionist art movement, was published in Montreal.