text at bottom on stone:
KEOKUK / CHIEF OF THE SACS & FOXES / PUBLISHED BY F. W. GREENOUGH, PHILAD / Drawn Printed & Coloured at J.T. Bowen's Lithographic Establishment No. 94 Walnut St: / Entered according to act of Congress in the Year 1936 by F.W. Greenough in the Clerks Office of the District Court of the Eastern District of Penna.
(Parker Gallery, London, England); Corcoran Gallery of Art, Washington, DC, 1953; acquired 2015 by the National Gallery of Art
- McKenney, Thomas, and James Hall. History of the Indian Tribes of North America, 3 vols. Philadelphia, PA: E.C. Biddle, 1936; D. Rice and J.G. Clark, 1942-44.