History of labour in the United States
The fourth study in Contributions to American economic history. ; Vol. 3, Working conditions, by Don D. Lescohier; Labor legislation, by Elizabeth Brandeis. Vol. 4, Labor movements, by Selig Perlman and Philip Taft. ; "Second printing, May, 1921. Reissued, October, 1926." ; Bibliography: v. 2, p. [539]-587; v. 3, p. 701-741; v. 4, p. 639-661. ; Mode of access: Internet.