Books:
Assault On The Liberty by Jim M. Ennes Jr. – He was there and wrote a concise account of what happened on the USS Liberty.
The Attack On The Liberty by James Scott
Body Of Secrets by James Banford
Websites:
Davis – Monthan Air Force Base
The 309th Aerospace Maintenance and Regeneration Group (309 AMARG)
http://joebaugher.com/ Joe Baugher – This is an amazing site that was very helpful to Katherine.
https://www.scramble.nl/database/military Scramble Dutch Aviation Society