Artsedge, John F. Kennedy Center for the Performing Arts. "N. C. Wyeth: A Short Biography"(PDF). Archived from the original(PDF) on February 10, 2007. Retrieved February 21, 2007.
Artsedge, John F. Kennedy Center for the Performing Arts. "N. C. Wyeth: A Short Biography"(PDF). Archived from the original(PDF) on February 10, 2007. Retrieved February 21, 2007.