Information on candidates, incumbency, and party accessed and verified via: http://sos.iowa.gov/elections/pdf/results/30s/1938gencanv.pdf
http://www.ourcampaigns.com/RaceDetail.html?RaceID=262960
Source for Popular Vote data: Iowa Secretary of State. State of Iowa - Canvass of the Vote - General Election - November 8, 1938, Iowa Secretary of State (http://sos.iowa.gov/elections/pdf/results/30s/1938gencanv.pdf) (accessed 23 Aug 2012)