Inker Chris Dreier's name mispelled Drier in credits.
Rock Raven is inspired by Dan Dare, Bronco by Buck Rogers, Gayle Ransom by Dale Arden.
Lionel Crabb is the name of an actual MI6 diver who disappeared in 1956.
The nickname given here alludes to Buster Crabbe, an actor playing Flash Gordon in a 1930s serial.