Mammoth City was the base of operations for the superhero Plastic Man.
- Although Mammoth City had existed as an unidentified city for more than a year, it was not named until Police Comics #18.
- In Plastic Man (Volume 4) #1, Eel O'Brian's driver's license is issued in Cole City, named after Jack Cole. In the next issue, this is changed to Mammoth City.
- In Justice League of America: Rebirth #1, Mammoth City's state is identified as New Jersey.
- Appearances of Mammoth City
- Location Gallery: Mammoth City
- Catalogued images related to Mammoth City
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