Patsy Robertson, « 18 Wing (PACAF) » [archive du ], Air Force Historical Research Agency, (consulté le )
nautilus.org
(en) Reed R. Probst Negotiating With the North Koreans: The U.S. Experience at Panmunjom (rapport), Carlisle Barracks, PA, U.S. Army War College, (lire en ligne, consulté le ) [archive du ]
navy.mil
nvr.navy.mil
(en) « List of active ships », Naval Vessel Register, NAVSEA Shipbuilding Support Office (consulté le ).
(en) Russell Stu, « Pueblo.org/Prisoners/The_Digit_Affair.html The Digit Affair », sur USS Pueblo Veteran's Association, « The finger became an integral part of our anti-propaganda campaign. Any time a camera appeared, so did the fingers. »
Patsy Robertson, « 18 Wing (PACAF) » [archive du ], Air Force Historical Research Agency, (consulté le )
(en) Reed R. Probst Negotiating With the North Koreans: The U.S. Experience at Panmunjom (rapport), Carlisle Barracks, PA, U.S. Army War College, (lire en ligne, consulté le ) [archive du ]