Lehman, Paul R. (Fall 1997). "Blue Mountain Eagle Climbing Club". The Historical Review of Berks County. Historical Society of Berks County. Archived from the original on 2008-05-29. Retrieved 2008-08-10.
"Bingham Medalists". The Society of Rheology. November 15, 2010. Archived from the original on July 13, 2010. Retrieved December 21, 2010.
web.archive.org
Lehman, Paul R. (Fall 1997). "Blue Mountain Eagle Climbing Club". The Historical Review of Berks County. Historical Society of Berks County. Archived from the original on 2008-05-29. Retrieved 2008-08-10.
"Eugene C. Bingham". Franklin Laurate Database. The Franklin Institute. Archived from the original on March 24, 2012. Retrieved December 21, 2010.
"Bingham Medalists". The Society of Rheology. November 15, 2010. Archived from the original on July 13, 2010. Retrieved December 21, 2010.