424

Historical Statistics, series Dc662, 4–500.

425

Historical Statistics, table Ae-A, 1–654.

426

David R. Weir, "A Century of U. S. Unemployment, 1890–1990," in Research in Economic History, vol. 14, ed. Roger L. Ransom, Richard Sutch, and Susan B. Carter (Stamford CT: JAI Press, 1992).

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