Employee of
- Chesler Studio (b. 1936) Notes: Milt Hammer might have done writing, pencils, and ink work for the studio during an unknown time period, but such work is unconfirmed.
Employee of
- Funnies, Inc. (b. 1939) Notes: Milt Hammer might have done pencil and ink work for the studio during an unknown time period, but such work is unconfirmed.