Wow, Howdy Doody. This brings back memories. I saw several episodes on a CT-100 at the TV station in Jackson, MS. I was in the first or second grade and my mother would take several of us down there to watch the show. For some reason I was enthralled with the idea of color TV. I remember that they had a small room with two CT-100's and 10 or 12 chairs around each set. Those huge boxes with that small picture tube. At that time we had a 21" RCA B&W at home. We also went down one night to watch some special. My memory is foggy but I think it was Heidi. Hey, while trying to verify it was Heidi, I found that William Shatner was Ranger Bob in one episode of Howdy Doody, per the IMDb.
For those interested in the history of old Radio and TV stations and the shows they carried along with historical TV schedules check out this site.
http://www.dougquick.com/wicsspringfield2.html
I can see that I will easily spend several hours going through it.