But I had to come back and post some great news here: The Warner Archive Collection has just announced the release of The Herculoids: The Complete Animated Series on DVD!
I don't have any details on the contents (other than it should be all 18 episodes from the original 1967-68 series on 2 discs, but Warner Archives releases generally tend not to have any bonus material on them). But that hasn't stopped me from placing my pre-order for the set! And I'll post a review of the set when I get it in my grubby little hands, and have a chance to watch them.
Here's the box art:
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