What Next?

Based on the reader response to the "A (Very Brief) Pictorial History" posts, this has proven to be a very popular series, which pleases me. With the publication of today's post on halflings, I've come to the end of those I'd originally had in mind to examine. However, I'm open to the idea of continuing the series, if there's still interest in my doing so. To do that, though, I need suggestions. About which Dungeons & Dragons monsters would you like to see pictorial history posts? 

As a reminder, here are the posts I've done so far:

BugbearsDrowElvesGnollsGoblinsHalflingsKoboldsOrcsTrollsAs you can see, there aren't even ten posts in this series, so there is plenty of scope for additional ones. My interest thus far has been in humanoid monsters and races, since they're often the ones whose appearances have varied the most over the years and that's fascinating. Of course, when their appearances don't vary, that's equally interesting and also worthy of examination. 
Before making any suggestions of possible additions, keep one thing in mind: the monster in question has to be commonplace enough to have appeared in multiple illustrations over the course of the TSR era of D&D. That means you won't be seeing "A (Very) Pictorial History of the Water Weird" or "A (Very) Brief Pictorial History of the Brain Mole" anytime soon – unless there really is some vast store of illustrations I've somehow overlooked. Stick to well used and iconic monsters and there's a better chance I can be swayed to write about them. No – don't even ask.