I was in the audience for some "Letter Game" tapings at WMAQ-TV in the mid-60s. Like WOF, "The Letter Game" was based on Hangman. Shows were taped two or three weeks ahead of their air dates, but I'd be willing to bet an unemployment check that none exist today.
The MC was Twin Cities TV personality Jim Hutton, who had earlier hosted "Everything's Relative", which was taped at 'MAQ for syndication to the NBC O&O stations. I had a nice, long conversation with his wife last November. Although Jim is still living, his health has been poor in recent years. Last fall, in fact, he suffered a pretty bad stroke.
Even earlier than "Everything's Relative", WMAQ (still known then as WNBQ) had "Tug-O-War", a quiz, in the mid-afternoon time slot following the original "Match Game".