Freddy just tried to upload a Harvey 'Green Hornet' comic.
Sadly these are not PD so I've had to delete the file.
I've also updated the Harvey folder on the site to reflect some titles are not PD.
JC or anyone else - if I've forgotten to include any non-PD Harvey titles there please correct it or let me know.
Thanks,
-Yoc
I can only tell you about individual issues, really, and can guess at the series by a lack of issue renewals. But I can't do much as far as predicting things by company. (This changes a bit with post-1950 books, because the Copyright Office database is searchable, of course.)
For what it's worth, I think that the Green Hornet is a policy decision, not an actual renewal. I don't see a "first renewal" entry on Ockerbloom's list, for example. (If I had to guess, I'd assume it's because any of the material could be derived from the radio show, which has weird, non-Federal copyright coverage. That can easily get messy, though it could probably be resolved by checking with a Hornet expert.)