One of numerous Casper clones, Spencer Spook was cut from a similar cloth--er, shroud. Spence originally appeared in GIGGLE COMICS from Creston Publications, an early imprint of the American Comics Group, aka ACG, owned by ex-con and pornographer Ben Sangor and his partner, Paul Sampliner.
This issue takes over from the previous 99 issues of GIGGLE COMICS and is repackaged as new. It's still good for a few yuks.
SPENCER SPOOK #100 (ACG, March-April 1955)
Created by Hubie Karp (script) and Ken Champin (art)