Extensive group includes: 6x9” illustrated mailing envelope, membership certificate dated 1955 in ink by member, membership card, and 15 “Martian Credit” money credit sheets. Each is 2-3/8x5-3/8” “Good On The Planet Venus Only.” All 15 have different denominations. Envelope has lt. aging. Fine. Rest of items are NM/Mint. Club was formed in 1955 by Channel 11, KELO-TV in Sioux Falls, South Dakota following the success of Captain Video and Space Patrol. The show ran for 41 years, making it the Midwest’s longest running children’s program. Rare grouping. These are the actual examples shown in Hake’s Pop Culture Guide.