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Ammonia industry -- Employees

 Subject
Subject Source: Library of Congress Subject Headings
Scope Note: Ammonia industry--Workers

Found in 1 Collection or Record:

National Ammonia Company of Pennsylvania photographs

 Collection
Identifier: 1972-379
Abstract: National Ammonia Company of Pennsylvania was a manufacturer of refrigerators which utilized the Claude process of sytheic ammonia for the coolant. The company was founded by Dr. Herman F. Dannenbaum (1857-1932) in Philadelphia in 1902. The collection consists of interior and exterior photographs of the National Ammonia Company of Pennsylvania's factory in Philadelphia.
Dates: circa 1924-1929