^"Franklin Mars". The Historical Society of Oak Park and River Forest. Archived from the original on October 10, 2010. Retrieved February 25, 2008.
^Keller, Martin (2019). Hijinx and Hearsay: Scenester Stories from Minnesota's Pop Life. Minnesota Historical Society Press. pp. 191–192. ISBN9781681341323.
^ abRobert Gilruth, Jean and Jeannette Piccard in The Glennan-Webb-Seamans Project for Research in Space History oral historyArchived April 15, 2007, at the Wayback Machine