- E. Nelson Bridwell (plot) ?; Howie Post ?; Al Jaffee ?
- Bob Oksner (signed)
- Tex Blaisdell (signed)
- Angel O'Day; Sam Simian (a gorilla); Trumbull; gangsters; cops; Stan Bragg; Tex Bumblewell (parody of inker Tex Blaisdell); a zookeeper
- Trumbull, with his leg in a cast, stumbles into O'DAY AND SIMEON, PRIVATE INVESTIGATORS. Angel is a crack PI and judo master. Sam is a gorilla who draws comic books. Sam delivers his latest art to Stan Bragg, publisher at BRAINPIX PUBLICATION, INC. Angel protects Trumbull from kidnapping, but they're nabbed. Sam races across the city (nobody noticing he's a gorilla in a suit) to the zoo. Angel wiggles out of her bonds as Sam avoids death traps. The zookeeper nabbed Trumbull for his cast, since the bandages contain "super rocket" plans - for a ride at Disneyland!
Series continues in Angel and the Ape (DC, 1968 series) #1 (November-December 1968).
There is no definite conclusion on who wrote this story. In Amazing World of DC Comics #10, January 1976, in "There's No Cases Like Showcases", Jack C. Harris wrote, "Orlando was up again with... Angel and the Ape... by E. Nelson Bridwell, Al Jaffee, Bob Oskner, and Tex Blaisdell... with the cover idea of [Sergio] Aragones. In the letters column of Adventure Comics #414, January 1972, when a fan recalls AATA, E. Nelson Bridwell replies, "That was a creation of Publisher Carmine Infantino, Editor Joe Orlando, and yours truly... with Bob's art." On The Drawing Board #67, June 1968, credits Bridwell with plot and Howie Post with script. Other writers cited in the past include Howie Post and Bob Kanigher (creation and writing).