How has nobody cited this one yet? This is THE iconic D&D image as far as I'm concerned, right down to the party puzzling over their map while the two rogues in the back are prying out a gemstone from an idol and you just know something bad is going to happen when that gem pops loose.
That's a Larry Elmore. His women tend to have the same face.
I think this was a Jim Holloway from the Basic D&D set... but maybe I'm misremembering? I think it was the same era as Bargle and Aleena, when Mystara was the default setting. Something about that simple daily life image of "demihuman" PCs stuck in my mind; even today, it inspires me to imagine a story explaining what they're talking about.
I've been watching the teasers for this Mystara book on YouTube. Can't wait.
The slain green dragon wyrmling is my pick!