|From left to right: Ernie Gygax, Scott Schwartz, Simon Todd, Andy|
[[Edit 6/14/2014]] Thanks to Guy Fullerton and +Michael Curtis we now know that the gentlemen on the right, farthest back is illustrator Simon Todd. Next to him is his friend Andy. That leaves only the gentleman in the upper left next to +Ernie Gygax to discover.
[[Edit 6/14/2014]] Thanks to the eagle eyed Guy Fullerton we know the identity of the last gentleman. His name is Scott Schwartz! Thank you all for helping me fill in these names and for getting their identities correct! I really appreciate all of your help!