Vol. 1. Introduction / John R. Commons
Colonial and Federal beginnings (to 1827) / David J. Saposs
Citizenship (1827-1833) / Helen L. Sumner
Trade unionism (1833-1839) / Edward B. Mittelman
Humanitarianism (1840-1860) / Henry E. Hoagland
Vol. 2. Nationalisation (1860-1877) / John B. Andrews
Upheaval and reorganisation / Selig Perlman
Vol. 3. Working conditions / Don D. Lescohier
Labor legislation / Elizabeth Brandeis
Vol. 4. Labor movements / Selig Perlman and Philip Taft.