Chain Letter is an American game show produced by Stefan Hatos-Monty Hall Productions that aired on NBC during the summer and early-fall of 1966.
Comedian Jan Murray hosted this game show, while Wendell Niles did the announcing.
The first pilot was developed under the title "Three of a Kind" and taped in January, 1964, with CBS Sports Jack Whitaker as emcee and co-creator/producer Monty Hall as announcer.
[1] The game was played similarly but with three players, one celebrity and two "occupationally themed" contestants, competing against each other in a two round format.
The second pilot and the first with the "Chain Letter" name was taped in December 1964; with Dennis James as emcee.