Roger that. Asking as I'm planning to start Arrow S1 very soon, so I wanted to know an optimal order to explore the entirety of the DC multiverse(s), both Live-Action and Animated (barring nonsense like Teen Titans Go, obviously).
I had to look this up, because not even the TF Wiki had a page on it, and...
... yeah, I'm gonna skip that and take your word for the Sentinels being alive again, for some reason.
I mean, hey, Hitler was killed by the Human Torch in Marvel canon, so anything is possible... except for Peter and MJ getting back together in 616, since those One More Day bootlickers would rather let Peter suffer.
Also, there's that time when Julius Caesar died in a freak accident years before his actual death, historically, and thus an alien assumed his identity to keep the timeline intact, meaning that any appearances of Caesar after 46 BC is of Charles Cotta (the alien who assumed Caesar's identity)...
Okay, here's what I found in regards to Medusa that still needs adding (pre-1961):
U.S.A. Comics #6 (October, 1942)
Mystery Tales #17 (September, 1953)
Tales of Suspense (1959) #10 (February, 1960)
@Megatron these still haven't been fixed yet.
Also, I think there should be another colour code solely for "Miscellaneous" stories (IE: Justice (1947) #20). Something like this:
Miscellaneous = #000000
Okay, so just got out of a screening for 28 Years Later. Firstly, good film, definitely better than fucking 28 Weeks Later.
Secondly, and most importantly...
God, the whole of Japanese G1 Continuity is a massive mess, especially when everything (and I do mean EVERYTHING) is considered canon to it. Yes, even that one icky manga where you have teenage girls KISSING THE TRANSFORMERS TO TRANSFORM!!