The Liberty Bell Bird Club was created in 1913 by The Farm Journal magazine. Under the magazine’s national sponsorship the club grew quickly attaining several hundred thousand members in just a few years. I don’t know how long the organization lasted but references to it drop off sharply after the mid 1920’s.
A 1915 club membership booklet states that 17 of the bird cards were available with more expected in the future. I am aware of 27 images so far. New members received 3 cards as noted on the membership card scan that Steve posted. The others were sold to club members in sets of 5.