"Dillon, C(larence) Douglas. Priscilla Roberts. "The Scribner Encyclopedia of American Lives. Arnold Markoe, Karen Markoe, and Kenneth T. Jackson (editors). Vol. 7: 2003-2005. Detroit: Charles Scribner's Sons, 2007. Reproduced in Biography Resource Center. Farmington Hills, Michigan: Gale, 2009. http://galenet.galegroup.com/servlet/BioRC (页面存档备份,存于互联网档案馆) Fee. Via Fairfax County Public Library. Accessed 2009-03-27. Document Number: K2875000085
"Dillon, C(larence) Douglas. Priscilla Roberts. "The Scribner Encyclopedia of American Lives. Arnold Markoe, Karen Markoe, and Kenneth T. Jackson (editors). Vol. 7: 2003-2005. Detroit: Charles Scribner's Sons, 2007. Reproduced in Biography Resource Center. Farmington Hills, Michigan: Gale, 2009. http://galenet.galegroup.com/servlet/BioRC (页面存档备份,存于互联网档案馆) Fee. Via Fairfax County Public Library. Accessed 2009-03-27. Document Number: K2875000085