A photograph of an agent Phelps doesn't select for the mission is that of William Paley, then the head of CBS.
With no technological wizardry being required, Barney Collier does not appear in this episode.
A new dossier picture for Cinnamon appears in this episode.
At the time of this episode's production and broadcast, Eric Braeden was regularly appearing as Captain Hans Dietrich of the German Afrika Korps on the 1966-68 World War II series The Rat Patrol (1966).
Here, actor Peter Graves (Jim Phelps) plays an American agent posing as a Nazi. In Stalag 17 (1953), Graves played a German undercover agent posing as an American POW.