Norman K. Risjord (27 Nov 2017). "Clark, George Rogers (19 November 1752–13 February 1818), revolutionary war general and "conqueror of the Northwest"". American National Biography Online (بالإنجليزية). DOI:10.1093/ANB/9780198606697.ARTICLE.0200067. ISSN:1470-6229. QID:Q103850287.
Norman K. Risjord (27 Nov 2017). "Clark, George Rogers (19 November 1752–13 February 1818), revolutionary war general and "conqueror of the Northwest"". American National Biography Online (بالإنجليزية). DOI:10.1093/ANB/9780198606697.ARTICLE.0200067. ISSN:1470-6229. QID:Q103850287.
Norman K. Risjord (27 Nov 2017). "Clark, George Rogers (19 November 1752–13 February 1818), revolutionary war general and "conqueror of the Northwest"". American National Biography Online (بالإنجليزية). DOI:10.1093/ANB/9780198606697.ARTICLE.0200067. ISSN:1470-6229. QID:Q103850287.
George Rogers Clark Trail: An Indiana Bicentennial Project. Indianapolis: Indiana American Bicentennial Commission. 1979. OCLC:32801237.