Pictographs of the North American Indians. A preliminary paper / Fourth Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1882-83, Government Printing Office, Washington, 1886, pages 3-256

by Garrick Mallery

ROCK CARVINGS IN IOWA.

Mr. P. W. Norris found numerous caves on the banks of the Mississippi River, in Northeastern Iowa, 4 miles south of New Albion, containing incised pictographs. Fifteen miles south of this locality paintings occur on the cliffs.