'Cookie, Cookie, lend me your comb?' - Wow! no I don't remember that! but it was Ephraim Zimbalist Jnr. (talking about him started this off). One episode was made completely without dialogue - with that music of course, but no speech - quite avant garde for the time.
I have vague recollections of it, it must have been on about 9pm but in the summer we always were up later. I know Circus Boy was always on when we were little. I'm on my third day of ploughing through the Big Valley, up to season 3!