What are the earliest TV programs you remember?

Kukla, Fran & Ollie? H.R. Puffinstuff? Captain Video (on the Dumont Television Network)? Arthur Godfrey and His Friends (anyone see Julius LaRosa get fired on-air?). December Bride, Peter & Gladys, what others?

Bonus: How many remember the musical interludes between programs, when shows were single-sponsored and it hadn’t occurred to anyone yet to sell free-standing ad time? Les Paul and Mary Ford, Liberace, and who else?
Just remembered Ardis Keneally and “Ding Dong School”, “I Remember Mama”, and “Clown” (one of many silent cartoons).