Armstrong Sperry is the author of Lost Lagoon. A Pacific Adventure ... Illustrated by the Author (1939), Little Eagle, a Navajo Boy. Written and Illustrated by A. Sperry (1938), One Day with Tuktu, an Eskimo Boy. Story and Pictures by A. Sperry (1935), One Day with Jambi in Sumatra. Told in Words and Pictures by A. Sperry (1934), One Day with Manu. Story and Pictures by A. Sperry (1933).