Awesome. This is one I never knew of until I started collecting old TV a decade or so ago. I don't think it was ever syndicated where I was growing up in the 70's. There is another similar Irwin Allen show called The Land of The Giants from the same time frame that I have as well. I'll start uploading those at some point. Purely for educational purposes, discussion of their cultural significance, etc, of course.
Also: When we first got these Mrs. Sunshine and I both spotted James Darren right away. We knew him as the holodeck lounge singer in Star Trek TNG.
All on Jootoob I see. Maybe I'll hold off on uploading those for a bit. My internet sucks and I have a lot of shows I want to put on here.
Edit: Uploading a Cannon right now. Probably an hour away.
You can upload them to Jootoob, then change them by replacing the word YOU with HOOK. It posts their videos without comercials or making them money (I am told).
Examples https://www.youtube.com/watch?v=m15MNLtpYUE https://www.hooktube.com/watch?v=m15MNLtpYUE
(post is archived)