"Published by authority of honble. Robert McClelland, Secretary of the Interior." "Drawn by F. Herbst & Thos. Jekyll." "Engr. by Selmar Siebert. Lettering by F. Courtenay." Some sheets annotated. Multiple editions of some sheets. Available also through the Library of Congress Web site as a raster image. Exhibited: Rivers, Edens, Empires : Lewis & Clark and the Revealing of America, Library of Congress, 2003.
United States. Army. Corps of Topographical Engineers - Emory, William H. (william Hemsley) - McClelland, Robert - Siebert, Selmar