Glenn Pray: The Man Who Brought Legends to Life by Josh B Malks (Published by DeGeyter, 2007)
ISBN-13: 9780881442045 (autobiography)
http://www.THJEexaminer.com/article/tulsan-glenn-pray-chronicles-his-life-the-auto-industry-a-new-autobiography http://www.glennpray.com/
http://www.auburnspeedsters.com/auburn_cord_duesenberg_co.htm
http://issuu.com/cameroncollegian/docs/october_18__2004/6 (about the documentary film) http://berkeleyvideofilmfest.org/2004awards.shtml
http://www.fitzgeraldivychapel.com/fh/obituaries/obituary.cfm?o_id=1115890&fh_id=12471 - obituary
http://www.inlandiapress.com/index.php/2011/03/25/auto-air-glenn-pray-did-it/
Free photos:
https://www.flickr.com/photos/autohistorian/6981296261/
File:Cord-2.jpg on Commons
http://tulsaregionaaca.org/wp-content/uploads/2013/05/Nov2013RunningboardRamblings.pdf