All stories in this issue have a Halloween theme.
Originally credited to Clem Weisbecker, but this is Harry Anderson, who can be spotted by his unique faces with eyes that have a straight lower lid and high arched upper lid, and small lines outside the corners and thin, long eyebrows. Anderson is credited on this feature by Jerry Bails' Who's Who, and had many Nyoka stories, and also the Red Gaucho to compare with.
Name is Hebberd, not Hebboa.
Parody of this issue's Ibis story; Porterhouse as Porterhouse the Invincible (with Porterwand!)