Thanks to our friend Emily for recommending and guesting for this episode!
Photo Sources:
https://en.wikipedia.org/wiki/Lockheed_Model_14_Super_Electra
https://en.wikipedia.org/wiki/Northwest_Airlines_Flight_1
Research Source:
https://web.archive.org/web/20110827174832/http://specialcollection.dotlibrary.dot.gov/
(Note you have to request this from the Department of Transportation.)