[spec]

Phil,
The Boston American also printed "cards" of players on both Boston teams in 1931, billing them as the Boston Evening American Baseball Album. The 1934 series was more wide-ranging as I have numbers as high as 192 and I see r.cedeno has more than 100 cut singles currently listed on eBay. These also appeared in the American's sister paper, the Record. I suspect many newspapers ran similar series as circulation stimulants during this period, especially papers owned by the Hearst Co. like the Boston American, Advertiser and Record.