There's a large collection of
TV Guide (Northern California edition) on
www.archive.org that spans every issue from 1-16-1965 through the end of February 1970:
https://archive.org/details/vintage-tv-guides/TV%20Guide%201965-01-16%20Northern%20CA/...and I was able to use it to fill in some missing celebrities from the "You Don't Say!" listings at
https://ctva.biz/US/GameShow/YouDontSay.htmMarch 1, 1965—Mona Freeman & Jack Ging
March 8, 1965—Lola Albright & Jack Palance
March 15, 1965—Connie Hines & Roger Smith
April 5, 1965—Betty White & Win[k] Martindale
July 26, 1965—Noreen Corcoran & Bill Bixby
August 2, 1965—Donna Loren & Richard Deacon
October 25, 1965—Vera Miles & Mel Torme
November 8, 1965—Joanie Sommers & Bob Denver
November 15, 1965—Betty White & John Astin
November 29, 1965—Laraine Day & Marty Ingels
December 6, 1965—Mary Ann Mobley & Hal March
December 20, 1965—Michael Landon & Robert Vaughn
December 27, 1965—Carolyn Jones & Brian Kelly
April 11, 1966—Donna Loren & Brian Kelly
September 5, 1966—Beverly Garland & Mike Connors
December 19, 1966—June Lockhart & Guy Williams
March 25, 1968—Pat Carroll & Leonard Nimoy
June 17, 1968—Alice Ghostley & Ken Berry
Doubtless, it could be mined for a lot more information, both for specific weeks where data is lacking and shows for which celebrity panelist listings haven't been published. Actually, I was going to do one for "Fractured Phrases," but the only weeks I found data for were November 22 (Vivian Vance & Phil Foster, as noted in the EOTVGS third edition) and November 29 (Shari Lewis & Paul Anka). The rest of December did not have celebrities listed, and it makes me wonder if the celebrities were a permanent addition or just a tryout for those two weeks.
The use of the "COLOR" emblem (changed to just a "C" in a rounded square by June 1969) can help to narrow when a series transitioned to color. The daytime "To Tell the Truth" is shown with the color designation beginning January 30, 1967, but these dates sometimes have to be taken with a grain of salt. "Password" is not indicated as being in color until September 19, 1966, one week after the fact. Several newspaper reports from the time indicate that "As the World Turns" switched on February 20, 1967, but
TV Guide was again a week late in updating its color listings. In other cases, contemporary newspaper mentions agree with
TV Guide, e.g. for "House Party" (January 10, 1966) and "Supermarket Sweep" (April 24, 1967).