Childcraft—The How and Why Library

Childcraft—The How and Why Library, is a multi-volume, illustrated educational book series for children, first published in 1934 by the World Book Company. Designed as a children's encyclopedia, it covers subjects like literature, science, and math through stories, poems, and activities, serving as a resource for parents and teachers as well as a learning tool for young readers. The series has been updated over the years, with different editions featuring new content and formats, and was sold door-to-door for decades.