I am just seeing this string and don't have time to go through it all but as to POW! the host and creator was Rolfe Peterson, an affable, smart and witty guy. I got to know him because though in high school I would write him with ideas for the show. And he invited me to be on the show a couple of times. He played public domain serials, mainly from Mascot. The favorite was Gene Autry in THE PHANTOM EMPIRE and he even issued small posters inducting the holder into the "JR. Thunder Riders of America." I have one still.