"Howell, John Adams"@en . "John Adams Howell (16 March 1840\u20131918) was a rear admiral of the United States Navy, who served during the Civil War and the Spanish\u2013American War. He was also a noted inventor."@en . . "1840-03-16Z"^^ . "1840Z"^^ . . . . . . "1858Z"^^ . "1918Z"^^ . . "John Adams Howell"@en . "United StatesNavyadmiral" . "1858Z"^^ .