John K. Amory, M.D., "George Washington’s infertility: Why was the father of our country never a father?" Fertility and Sterility, Vol. 81, No. 3, March 2004. (online, PDF format)Archiviato il 4 marzo 2009 in Internet Archive.
John K. Amory, M.D., "George Washington’s infertility: Why was the father of our country never a father?" Fertility and Sterility, Vol. 81, No. 3, March 2004. (online, PDF format)Archiviato il 4 marzo 2009 in Internet Archive.
New Kent County Planning Commission, New Kent County Comprehensive Plan: Existing Conditions (PDF), su co.new-kent.va.us, New Kent County Planning Commission, 6 giugno 2002. URL consultato il 4 marzo 2008 (archiviato dall'url originale il 31 ottobre 2007).