The designation F-4H was not applied, lest it be confused with the pre-1962
designation of F4H for the Phantom.
Sources:
- McDonnell Douglas Aircraft Since 1920: Volume II, Rene J. Francillon,
Naval Institute Press, 1990.
- McDonnell F-4 Phantom: Spirit in the Skies. Airtime Publishing, 1992.
- The American Fighter, Enzo Angelucci and Peter Bowers, Orion, 1987.