Here are some more articles:
How to modify an RCA-630 type TV to view, in black & white, CBS Colorcasts from 1951.
"Color TV on Wheels" about how GE built a 35 foot trailer for the Army from 1959.
"Don't Be Afraid of Color TV" aimed at TV servicemen from 1956.
Hoffman "Colorcasters" for 1957.
3 day Color TV symposium for service technicians from August 1954. This one has a picture of what looks like a
15 inch Color TV prototype.
http://s24.photobucket.com/albums/c4...54/OldColorTV/
I also have some scans of old Color TV ads featuring "Roundies".
http://s24.photobucket.com/albums/c4...OldColorTVAds/
My favorite is the Telefunken roundie...