[J. Thomas Scharf (1886)] The opera-tions of this mining company were suddenly termi-nated by the breaking out of the Revolutionary War, never again to be resumed. There are two references to these mines in the office of the Secretary of State, at Albany, the first of which is as follows: "No. 54. Stephen Lyon, Westchester County, town of Mount Pleasant, about 100 rods south of the discover-er's dock, and about 80 rods south of the farmers' dock at Sing Sing landing, upon lands of Jr\u F. Marsh, (gold and silver). Nov. 14, 1820. 41. 204." The second entry reads — "No. 57. Stephen Lyon> Westchester County, town of Mount Pleasant, addi-tional vein south of the mine, which is now on file, extending one mile south of said mine (gold and sil-ver). Jan. 30, 1824. 41. 296." This last entry probably has connection with the formation of a company, chiefly composed of residents of Sing Sing, which was organized under the superin-tendence of the late Mr. George W. Cartwright, a civil engineer, in the year 1824, by whom the mine was re-opened.