This may appear very faint on your computer, so feel free to click the pic to get the real deal version. No extra charge, although gratuities are greatly appreciated.
This is a production drawing from The Superman/Aquaman Hour of Adventure tv series that aired in 1967. I picked up a bunch of these, along with some cels from the same show, and the lot is amongst some of my most favoritest stuff. I think it's just the fact that it's the Atom... on a tv series... in 1967. I do love my history.
This one in particular is exceptional because... well, he's on a cat. Big ol fluffy one. I don't know if he's waking cat up, or putting cat to sleep. Perhaps he's preparing to challenge the 8 second mark of cat riding without getting thrown.
Feel free to throw in your thoughts on what exactly is transpiring here.