Canada. Parliament. House of Commons.
United States. Congress. House. Committee on Investigation of United States Steel Corporation
William Manchester
Harold C. Livesay
Bell, Thomas
United States. Bureau of the Census
International Labour Office
United States. Bureau of Labor Statistics.
R. M. Lala
United States. General Accounting Office
Paul Hadlock
Marcia Davenport
ASM International. Handbook Committee
United States. Congress. Senate. Committee on Immigration
Joseph Frazier Wall
United States. Congress. Senate. Special Committee To Study Problems of American Small Business. Subcommittee on Oil.
Scott, John
Unknown Author