• [S187] Virginia Lee Hutcheson Davis. Jamestowne Ancestors 1607 - 1699, Commemoration of the 400th Anniversary of the Landing at James Towne 1607-2007. 3600 Clipper Mill Rd., Ste. 260, Baltimore, Maryland 21211-1953: Genealogical Publishing Co., Inc., 2006.
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  • [S209] Anonymous. A roster of Revolutionary ancestors of the Indiana Daughters of the American Revolution: commemoration of the United States of America bicentennial. July 4, 1976. Digital reprint on-line by Heritage Quest, Evansville, Indiana: Unigraphic.
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  • [S215] Barack Obama's Connection to President Abraham Lincoln, Scot's Blog at Fiske-Bigelow.com, (e-mail address).
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  • [S220] William Calk by Sherry Chandler, March 16, 2009, http://sherrychandler.com/2009/03/16/william-calk/
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