Design for improved submarine tunnel, comprising brick arch within cast or wrought iron skin, laid in trench dredged for that purpose [first proposed in 1868 for crossing Boston Harbor].

Bibliographic Details
Corporate Author:	United States. Army. Corps of Engineers
Other Authors:	Foster, J. G. (Bvt. Maj. Gen.)
Format:	Government Document eBook
Language:	English
Published:	Washington, DC : [publisher not identified], 1872.
Subjects:	Engineering drawings > Design and construction. Tunnels > Design and construction. Electronic books.
Online Access:	Connect to the full text of this electronic document

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