PARTY MEMBERSHIP 1929
At the time of its Founding Convention in May 1929, the Communist League of America (Opposition) had "approximately 100 members."
[fn. James P. Cannon, The History of American Trotskyism , (NY: Pathfinder Press, 1972), pg. 79.] 1931-1933
During the period 1931-1933, the Communist League of America had fewer than 200 members.
[fn. Emily Turnbull and James Robertson, "Introduction" to Dog Days: James P. Cannon vs. Max Schachtman in the Communist League of America, 1931-1933. (NY: Prometheus Research Library, 2002), pg. 1.]