Alvin^Schwartz
Librarian Note: There is more than one author in the Goodreads database with this name.

Alvin Schwartz was the author of more than fifty books dedicated to and dealing with topics such as folklore and word play, many of which were intended for young readers. He is often confused with another Alvin_Schwartz, who wrote Superman and Batman daily comics strips and a novel titled The Blowtop.

For Batman - See: Alvin^^Schwartz https://www.goodreads.com/author/show...