About 25 years back, my wife and I used to regularly watch I’ll Fly Away and Reasonable Doubts. They both ran for only two seasons.
The Adventures of Jerry Lewis was funnier than the real Jerry Lewis. It built up a great cast of characters (nephew Renfrew, housekeeper Witch Kraft, the monster school faculty, and the Nazi summer camp director at Camp Wack-A-Boy), and you didn’t have to listen to Jerry Lewis’s voice.
Here’s one that has not been mentioned that I remember.
Mr. Merlin: A story of Merlin the magician who is still living in modern times as an auto mechanic, and his 15 year old apprentice (who became so by being the only one to pull a crowbar out from a bucket of hardened cement).
I’ll second this. You also got the “Letter from Jerry” that wasn’t actually written by Jerry.
The Jerry Lewis comic actually started as Jerry Lewis and Dean Martin. They dropped Dean after the split-up.
Old? You want old?!?
Sheriff of Cochise, a modern-day (1950s) western
***Topper ***with Leo G Carrol
Love That Bob with Bob Cummings and Ann B Davis
My Little Margie with Gale Storm
***Checkmate ***with Sebastian Cabot
The Roy Rogers Show with Roy Rogers and Dale Evans
Sky King who flew the Songbird
Sea Hunt with Lloyd Bridges
The abovementioned Ruff and Reddy
The very first episode of Rocky and Bullwinkle with the scrooch-gunning Moonmen
I watched all of these in my dad’s TV shop when I was three or four.
I remember these shows, but not the others you mentioned. In the DC area in the early 1960s, Sky King would come on right after the Saturday morning cartoons.
And on Sunday nights it was The Rebel (with Nick Adams as Johnny Yuma) and ***Rin-Tin-Tin ***(with “Rusty”).
This one still airs occasionally on one of my local (used to be) UHF stations. Along with I Married Joan, Date With the Angels, The Trouble With Father, and others. (It is the channel that I mentioned running across Voyagers! on a few days ago.)
Here’s a trivia question for you: Alan Hale, Jr, (aka “The Skipper” on Gilligan’s Island) starred in a series based on an American folk hero. It had a famous song as its theme. Name the series. (I watched this one too when I was three or four.)
Mommy, what’s a TV shop? 
far as George costanza, I know he was on Seinfeld, hard not to, but I found that show to be utterly unwatchable the few times I tried, so didn’t know that.
Regarding Sheldon, well, huh! I like the show, but don’t watch all that often(Mrs. Guest is the main tv watcher), I’ve only ever seen him wearing something Green Lantern related to the best of my recollection. Found out something new.
Well, son, believe it or not, there was a time when people brought their TVs in to be repaired when they broke, instead of just chucking them into the trash…
Ah, nostalgia! :o
Oops, actually the monster faculty was in the Bob Hope comic…though the Jerry Lewis series did at least have one with mummies.
I doubt getting wrong the details of Bob Hope and Jerry Lewis comics was going to get you called out by anyone 
Sadly, the TV repair shop in the town where I live closed down, but only a year or two ago. Before that, people were still bringing in their enormous flatscreen units to be fixed, rather than replaced.
Back in 2009, when they switched broadcasting systems in Ontario (and, I assume, the rest of Canada as well), the streets were littered with perfectly good TVs that could still be used, but nooooooooooo! They were left out for the trashman to collect… 
I was home sick a lot when I was in the single digits. I remember watching ‘I Married Joan’ with my grandma (I can still sing the theme song), ‘Pete and Gladys’, and ‘The Offy Goffy Show’ (Arthur Godfrey, how a’ya, how a’ya, how a’ya). There was some comedy on at night about a French girl? Angel? and ‘Love on a Rooftop’ a few years later.
Was ‘My Friend Flicka’ mentioned, after ‘Sky King’ on Saturday mornings? I didn’t watch much of that, it was noon and time to go out and play or something. I did read the book and was shocked to the core at the sad, gritty reality of life on a ranch. The tv show never showed the bad, sad things!
My brothers and I loved the show Secret Agent (1964-1967) starring Patrick McGoohan. Secret Agent
It had a kickass theme song, sung by Johnny Rivers.
Secret Agent Man
Probably more people remember the song than the show.
Known as Danger Man in the UK. Its kick-ass theme (played on a harpsichord) is on YouTube.
I think some full episodes are on YouTube as well, all in B&W.
One of the lines from the US theme fits in so very well with McGoohan’s next series (which many people saw as a continuation of secret Agent/Danger man, although McGoohan denied it), The Prisoner: