Ackerman, Francis Eugene, 1888- Tonk and Tonka. [electronic resource] / Illustrated by Carl Burger.. — [1st ed.]. — New York, : Dutton, [1962]. — 47 p. : illus. 23 cm. LCCN: 62007494 LC Class. No.: PZ10.3.A15 / To Dewey Class. No.: 598