Modlin, George M. (1955). Commencement Address. U.S. Government Printing Office. p. A4193. Archived from the original on April 9, 2023. Retrieved February 26, 2021.
"National Register of Historic Places Listings". Weekly List of Actions Taken on Properties: 5/06/13 through 5/10/13. National Park Service. May 17, 2013. Archived from the original on November 2, 2013. Retrieved January 15, 2014.
Modlin, George M. (1955). Commencement Address. U.S. Government Printing Office. p. A4193. Archived from the original on April 9, 2023. Retrieved February 26, 2021.
"National Register of Historic Places Listings". Weekly List of Actions Taken on Properties: 5/06/13 through 5/10/13. National Park Service. May 17, 2013. Archived from the original on November 2, 2013. Retrieved January 15, 2014.