Leo Wolman

• The growth of American trade unions 1880-1923
• An outline of the American labor movement
• Boycott in American Trade Unions
• Ebb and flow in trade unionism
• Ebb and flow in trade unionism (Publications of the National Bureau of Economic Research, inc)
• THE GROWTH OF THE AMERICAN TRADE UNIONS 1880-1923
• Wages During the Depression (Nber Bulletin Series : No 46)