Letters of Recommendation to the U.S. Naval Observatory

Letters of Recommendation to the U.S. Naval Observatory and Hydrographic Office Written on Behalf of Miles Rock.

Rear Admiral John Rodgers (1812-1882), [letter] 1881, April 15, [to] Miles Rock, Washington, D.C.

Lieutenant Commander Green [letter] 1877, September 1, [to] Hydrographic Office, Washington, D.C.