Design for an improved submarine tunnel
Subtitle: comprising a brick arch within a cast or wrought iron skin, laid in a trench dredged for that purpose
By: by Lieut. Col. J.G. Foster, Corps of Engrs. and Bvt. Maj. Genl. U.S.A., 1868.
Contributors: United States. Army. Corps of Engineers.
Publisher: s.n.]
Published: 1872
Place of publication: [Washington, D.C.?
Language: eng
Subjects: Tunnels.; Tunneling.; Underwater construction.
Notes: At head of title: 1872.

Introductory remarks on p. [2] signed by J.G. Foster and dated Oct. 29, 1872, making reference to an earlier report he had submitted in June of 1868.

Lettered on cover: "Engineer Department, U.S.A. Submarine Tunnel. Foster. 1868."