G. H. Willard
William Caslon
American Foundrymen's Society.
Unknown Author
James Ritchey
Canada. Industry, Science and Technology Canada.
William Davies
American Foundrymen's Society. Foundry Sand Additives Committee.
Walter Westwood
National Institute for Occupational Safety and Health.
United States. Bureau of the Census
Bruno Kerl
United States. Bureau of Foreign and Domestic Commerce
George I. Adams
Clyde Anton Sanders
Peter G. Townsend