Blue Beetle, E-Man and Captain Atom are seen in the background of a parade. They are using their powers so it is not somebody dressing up for the parade.
E-Man appearance here occurs between E-Man (Charlton, 1973 series) #5 and #6. Captain Atom next in The Charlton Bullseye (CPL/GANG Publications, 1975 series) #1. Blue Beetle next in Charlton Bullseye (Charlton, 1981 series) #1.
Alphonse Cuti is credited as technical advisor.