Correspondence, 1922 Oct. 9, 10, 12.
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Mackay, Clarence H. (Clarence Hungerford), 1874-1938
http://n2t.net/ark:/99166/w67766bn (person)
Clarence Hungerford MacKay was an art collector, patron, businessman, philanthropist, chairman of the board of the Postal Telegraph and Cable Corporation, president of Mackay Radio, and son of the silver magnate, John W. Mackay (1831-1902)....