House ad for Who's Who in the DC Universe (1985); printed in World's Finest Comics #314 (April 1985)
Atomic Knight art by Murphy Anderson, from Who's Who #1:
Page from Who's Who: The Definite Directory of the DC Universe v.1 #1 (March 1985), pencils and inks by Murphy Anderson
And if you can't get enough Who ('s Who) excitement, you really need to check out Siskoid's Blog of Geekery and his "Who's This?" feature, focusing on the C-listers in Who's Who and forgotten DC Universe heroes and villains of the past! Like, say, this fellow they call "Bat-Man"he puzzles me!