Keith Allen Lehman, Light House Journal (July 18, 2010). "William Henry Jackson". Archived from the original on 29 November 2012. Retrieved 26 September 2010.
Keith Allen Lehman, Light House Journal (July 18, 2010). "William Henry Jackson". Archived from the original on 29 November 2012. Retrieved 26 September 2010.
Sherwood, Herbert Francis. "What did it Mean to Them?" Outlook. 1913, pages 610-612. Reprinted in Gettysburg Magazine, Issue 50, January 2014, pages 24-28. ISSN2372-6059. Includes a photograph owned by the National Park Service of William Henry Jackson taken at the 1938 reunion.