Betty MacDonald (1907-1958) was the author of the beloved children's books about Mrs. Piggle-Wiggle, including: Mrs. Piggle-Wiggle; Hello, Mrs. Piggle-Wiggle; Mrs. Piggle-Wiggle's Magic; Mrs. Piggle-Wiggle's Farm; and Happy Birthday, Mrs. Piggle-Wiggle. The Mrs. Piggle-Wiggle stories were first told to her two daughters