My dad was a big fan of Jay Ward's wonderfully absurd Rocky and Bullwinkle Show, but otherwise had no connection to Ward until later in the 1960's when he was briefly involved with George of The Jungle, of which Super Chicken (and Fred, of course) starred in their own episodes. In fact it was so brief I'd pretty much forgotten about it until I came upon this stash of model sheets among the Irvchives. I think the year was 1967 and I imagine he was doing story, but anyone who has access to the credits, on the George DVD for instance, your input is welcome.
Model sheets are all I have and I don't know who drew the ones above. However, I can vouch for the handwriting on these last two being my dad's, the secondary characters McTasty and Spike for episode 15.
(Actually, it was Spectorphile acolyte Weirdo who went ga-ga and called for Super Chicken when he saw that I'd appended the top model sheet to my earlier Taste Just Like Chicken post. So Weirdo, (and any other Super Chicken fans) this post's for you.)