Although Sheldon illustrated several of her mother's books, she only sold one illustration during her lifetime, in 1931, to The New Yorker, with help from Harold Ober, a New York agent who worked with her mother.
Sheldon illustrated several of her mother's books. She only sold one illustration during her lifetime to The New Yorker from Harold Ober. This was with help. This was in 1931. Harold Ober was a New York agent. This New York agent worked with her mother.