Just when I think I understand things....
I check on TV releases by going to this site, which someone on this forum kindly directed me to some months ago:
Index of /images/13076
I've noticed that they occasionally will back-fill earlier releases (for example, they've gone back and added a bunch to the GC series lately even though the most current release is the JG series).
Also, I visited Baseball Birthdays and noticed a host of TV series which do not appear on the auction helper website.
What is there an authoritative source for each series thus far released, and is there a way to tell when they release images into previous series without having to go back and check older series randomly to check for additions? Sorry for the questions, but it seems I still have a lot to learn.
Also, now that some very dedicated people have begun the complete ID project, the next step would seem to be to create an index for the ID'd images. If no one has started this yet, I'm thinking I might want to give it a crack.