Macomber, Mabel E. Playground Mystery Boxes
Boston, Richard G. Badger, Publisher, (1927). First edition. Hardcover
Hardcover book with a former owner name, otherwise very good condition. Illustrated with photographs. The study of child character in neighborhood playgrounds; talks from experience on how to supervise real play scientifically; a please for street children, to satisfy their play hunger safely and thus prevent injury, disease, death, crime, and insanity.