William Shadrack Shallenberger (1839–1914), Republican member of the U.S. House of Representatives from Pennsylvania
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Ashton C. Shallenberger (1862–1938), Nebraska Democratic politician and 15th Governor of Nebraska from 1909 to 1911
In November 2004, a private investigator met Shallenberger at Wallens Ridge State Prison in Big Stone Gap, Virginia on behalf of Lewis.
The protagonist is Scott Shallenberger Stewart, who begins as a country boy and ends among the roster of "the lords of creation"—Andrew Carnegie, Henry Clay Frick, Andrew W. Mellon, George Westinghouse, and others.