The Lisa plot thickens... The Paley Center has an episode dated December 16, 1965, which they called "Lisa And Bob's Custody Battle".
According to our info now, this would be in between Fulton's exit to do OPW (in '65) and her return (in '67). Interestingly, the cast list for the episode does not include Fulton or the character of Lisa.
Was Bob involved in a custody battle with an offscreen Lisa? Did Fulton make an appearance during her break from the show? Did Fulton in fact return much earlier than we previously believed?
I just found a wonderful page with descriptions for 1956/57 episodes, coming from TV Guide issues.
However, this info seems to corroborate your first post above, not the second. It also states there actually WAS a Thanksgiving pre-emption.
What do you think @Paul Raven? How are we to interpret this info?
It's such a shame 13 Bourbon St. never surfaced - it would've been interesting to see what it would've done, but I guess both Melrose Place and Beverly Hills 90210 had started their declines back then. Still, I believe a pilot was shot and I'd kill to see it.