SUFFERN, ARTHUR E., Conciliation and Arbitration in the Coal Mining Industry in America, Mifflin, 1915.
SYDENSTRICKER, EDGAR, Collective Bargaining in the Anthracite Coal Industry, Bulletin No. 191 of the United States Bureau of Labor Statistics, 1916.
WOLMAN, LEO, The Boycott in American Trade Unions, Johns Hopkins University, 1916.
Labor Encyclopedias:
AMERICAN FEDERATION OF LABOR, History, Encyclopedia, Reference Book, American Federation of Labor, 1919.
BROWNE, WALDO R., What's What in the Labor Movement, Huebsch, 1921.
FOOTNOTE: