[47] Valparaiso letter to New York World.
[48] Daily News.
[49] “The New American Navy,” by Ex-Secretary of the Navy, John D. Long.
[50] From “The New American Navy,” and “The United States Naval Academy,” by Park Benjamin.
[51] “The New American Navy,” by John D. Long.
[52] Report by Lieut.-Commander Simms, U.S.N.
[53] The Times, December 24, 1864.
[54] Engineering, April 28, 1911.
[55] Paper by M. Canet, Junior Institution of Engineers, 1907.
[56] The Times.