The Justice Society portrait on the wall of the meeting room is copied from All-Star Comics #3, with the addition of Wonder Woman. There is a picture of the Batman, Wonder Woman, and Superman of the JSI's world on the wall of their headquarters. Power Girl's room has a map of Krypton like the map in Superman Annual (DC, 1960 series) #1.
The portrait artist in the pin-up is in homage to the artist figure in Norman Rockwell's self-portrait. Art credits on splash page of first story in this issue.