[1] Timmy the Timid Ghost first appeared as a minor character in an Atomic Mouse story, "3-D Crime Wave" by Al Fago, in Atomic Mouse #5 (November 1953).
[2] Possibly in response to the popularity of Casper the Friendly Ghost, Timmy later graduated to his own comic book, beginning in Timmy the Timid Ghost #3 (February 1956).
[3] The numbering of this series continued from Charlton's Win a Prize #2, as indicated in the "Statement of Ownership" in issue #4.
[5][6] In 1985, Timmy the Timid Ghost returned for a brief three-issue run,[7] continuing the numbering from the last series.
This final series was canceled when Charlton Publications closed its comic book division.