Cincinnati Civil War Round Table. "Salmon Portland Chase: Lincoln's Able Financier." Accessed December 18, 2012. 

Clarke Historical Library. "George Baptiste." Accessed December 18, 2012.

Clermont County Ohio Convention & Visitors Bureau. "Freedom Trail." Accessed December 18, 2012.

Educational Broadcasting Corporation. "Slavery and Making of America." Accessed December 18, 2012.

Indiana Department of Natural Resources. "Underground Railroad Initiative." Accessed December 13, 2012.

Indiana Historical Bureau. "Hohn Freeman." Accessed December 18, 2012.

The Library of Congress. "The Frederick Dougias Papers at the Library of Congress." Accessed December 18, 2012.

Madison County Historical Society. "A Stop on the Underground Railroad." Accessed December 18, 2012.

National Park Service. "National Underground Railroad Network to Freedom." Accessed December 13, 2012.

North Country Underground Railroad Historical Association."St. Lawrence County." Accessed December 18, 2012.

National Underground Railroad Freedom Center. "People of the Underground Railroad." Accessed December 13, 2012.

Ohio History Central. "Underground Railroad." Accessed December 13, 2012.

Ohio Historical Society. "Underground Railroad Information Station." Accessed December 13, 2012.

Siebert, Wilbur Henry. The Underground Railroad from Slavery to Freedom., second edition. MacMillan Company, 1898.