David Crosthwait

Biography

David Nelson Crosthwait Jr. (May 27, 1892 – February 25, 1976) was an African-American mechanical and electrical engineer, inventor, and writer. Crosthwait's expertise was on air ventilation, central air conditioning, and heat transfer systems. He was responsible for creating heating systems for larger buildings such as Rockefeller Center and New York's Radio City Music Hall.

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