An Appeal to the Internet Fount of Wisdom

Back in the late '70's and into the '80's there was a series of D&D ads that appeared in comic books and elsewhere.  I never paid much attention to them, but I know they were part of what got people into the hobby.  Now, however, I find myself curious about the ads and the characters depicted - for some reason, I associated them with Holmes and possibly Moldvay Basic - but I've been unable to find them on a quick Google-search, which is frustrating.  I know about the ads with Grimblade, Saren, Indel and Valerius, but I clearly remember a different set of characters in a different set of ads.  Can the internet Fount of Wisdom help me out here?