There's a good RCA olor Pic-To-Guide by John R Meagher on ebay that covers the early 60's color sets. Great book. I have a copy of it and cannot recommend it more highly for anyone who is trying to service these sets now themselves. Also in the auction is another good color repair book by Wayne Lemons and Carl Babcoke. I also have this book (Howard Sams CSL-1). It covers color receivers from 1957 through 1964. I also recommend this one.
http://cgi.ebay.com/ws/eBayISAPI.dll...&category=3638
Rob