[Apes of Wrath] The Amazing Comic Gorilla Cover Index
This guy has a fantastic online collection of comic cover scans, but only gorilla-themed covers make the cut. In persuit of completeness, he can be a bit lax. I spotted a chimp under "P". Don't take this for granted, though. This site is as worth as much time as you can give it, Congorilla. Who knew that this even existed?