Note G — APPENDIX IV. Membership Statistics.
Reading edition
The figures in column 3 are from Professor Geo. E. Barnett, "Membership of American Trade Unions," Quarterly Journal of Economics, vol. xxx, p. 846 (August, 1916). His figures come, apparently, from I. W. W. headquarters in Chicago, but they do not agree entirely with those furnished the author by Secretary St. John.