The Childcraft The How and Why Library Volumes 1-15 Complete Set of children's books from 1988 is a vintage collection of nonfiction reference picture books published by World Book, Incorporated. This set includes 5000 pages of illustrated books authored by Inc. Staff World Book, focusing on topics related to health, daily living, and social issues suitable for juveniles. The books, aimed at children aged 1 to 15, provide a comprehensive look at various subjects in an engaging and informative manner, making them a valuable resource for young readers even in todays era.