Wanda Gag, author of Millions of Cats and Gone Is Gone, or The Story of a Man Who Wanted To Do Housework, b. 1893. She also wrote The ABC Bunny, in which the aforesaid bunnies crash and dash and meet up with all kinds of other forest creatures all the way to “Z for ZERO, Close the Book.”
While looking around, I also found mention of this autobiographical book by and about Wanda Gag, Growing Pains: Diaries and Drawings from the Years 1908-1917. I’d like to read it, but I still haven’t found a copy in any of the libraries nearby.

Ezra Jack Keats, author of Whistle for Willie and Peter’s Chair and many more delightful picture books, b. 1916. Oh, he also wrote A Letter for Amy in which Peter invites his friend Amy to his birthday party but then worries that the other boys will laugh at him for having a girl at his party. I always assumed that Ezra Jack Keats was a black man, I guess because many of the children in his books are African-American, but he was Jewish.