Photograph by Christens, 2007.Courtesy The Nebraska Cattleman Magazine, 9-07 018

Courtesty NET Learning Services

Photographer Jim Koch. Courtesy U.S. Department of Agriculture, K10380-1

Photographer Scott Bauer. Courtesy U.S. Department of Agriculture, K9486-1

Photographer Stephen Ausmus. Courtesy U.S. Department of Agriculture, k9988-1

From the 2008 NET Television program, Beef State

Susette La Flesche Tibbles

Courtesy University of Nebraska State Museum

By Jack Dykinga [Public domain], via Wikimedia Commons

By Wood engraving by Alfred Bobbett, ca. 1824-1888 or 9, engraver, based on painting by Felix Octavius Carr Darley, 1822-1888. [Public domain], via Wikimedia Commons

Wikipedia Common Domain

Charles Marion Russell [Public domain], via Wikimedia Commons

By Shannon1 (Self made, topography from DEMIS Mapserver) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY-SA 4.0-3.0-2.5-2.0-1.0 (https://creativecommons.org/licenses/by-sa/4.0-3.0-2.5-2.0-1.0)], via Wikimedia Commons

Oregon Trail. Line of Original Emigration to the Pacific Northwest Commonly Known as the Old Oregon Trail" from The Ox Team or the Old Oregon Trail 1852-1906 by Ezra Meeker. Fourth Edition 1907. "Courtesy of the University of Texas Libraries, The University of Texas at Austin."

By User: Nikater [Public domain or Public domain], via Wikimedia Commons

By (see signatur) [Public domain], via Wikimedia Commons