I've never seen any mention of the 1964 TV marionette show Stingray being an influence on Roddenberry, but I just started watching it and I think it is unmistakable. I vaguely remember seeing Stingray as a kid but hadn't thought about the show until I noticed it was available on Amazon Prime. After watching the first 3 episodes I started noticing all sorts of things that seem familiar from TOS, but knowing that Stingray came first. The timing in '64 vs TOS in '66 is just right for it to have been a source of inspiration to Roddenberry. Has anyone ever seen a quote or story where Stingray is cited? It would be fun if some others watch a few episodes and see what you notice. I'll mention 3 things: One is the acceleration rate numbers used in Stingray rather than speed, as an inspiration for warp factors. A second, visible in episode 3, is the visual of the 2 ship drivers in the foreground (ala Sulu, Chekov) with the boss and beautiful babe in the background (Kirk, Chapel). The third is the general look of the aliens vs look of Klingons. There are many other things such as music style and controls. What do you think? Is it obvious to you too or is there an earlier common source that I'm not thinking of?