In 1976, a company called TCMA, which mainly produced minor league baseball cards, produced a set of 630 cards consisting of Major League Ball players. The cards were produced under the name the Sports Stars Publishing Company, or SSPC. TCMA published a baseball card magazine named Collectors Quarterly which it used to advertise its set offering it directly via mail order. The cards were available directly from TCMA, and were not made available again, like other sets issued by TCMA, due to a manufacturers' agreement.