Unlike tube audio, not many people have walked this path in the internet era. I would suggest primary sources. A lot of great info in the periodicals of the day. Start by digesting everything tv related you can find ih RCA Review, Electronics, Radio and TV News, etc. You can find much info at
www.worldradiohistory.com, but it will be basic research - no spoon feeding here. The info is there but finding it is another question! If this project bears fruit I'm quite interested to learn about it!
At least these days it is online and free! This kind of info used to live only in corners of technical libraries.
Also keep in mind that no "tv cookbook" exists, because tvs were too complex to DIY, and commercial products contained trade secrets. Most educational materials were aimed at service men not designers
Speaking of which Google's patent search may also be useful.