Oldham, Kit (August 19, 2003). "Jackson, Henry M. "Scoop"". History Link, The free online encyclopedia of Washington state history. Archived from the original on November 18, 2007. Retrieved June 1, 2006.
Oldham, Kit (August 19, 2003). "Jackson, Henry M. "Scoop"". History Link, The free online encyclopedia of Washington state history. Archived from the original on November 18, 2007. Retrieved June 1, 2006.
"Special Collections, UW Libraries". Henry M. Jackson papers. September 26, 2012. Archived from the original on September 26, 2012. Retrieved September 5, 2018.{{cite web}}: CS1 maint: unfit URL (link)