In 1980, the Fandom Calendar contained a Sim page. This is
the text that went with it:
Cerebus the Aardvark grew out of a simple logo sketch for a projected
fanzine which never saw print. The idea nonetheless took root and Dave
developed the character for a strip provided originally for Mike
Friedrich's Quack magazine...just before it folded. Noone to give up,
Dave entered the ranks of independent comics publishers, where he
turned Cerebus in a successful bi-monthly. With over a dozend issues
to his credit, Dave and Cerebus have entertained and delighted thousands
with the world's foremost (and only) funny animal sword-&-sorcery
strip ever created.