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].
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| Format: | Government Document eBook |
| Language: | English |
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Washington, DC :
[publisher not identified],
1872.
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| Online Access: | Connect to the full text of this electronic document |
| Item Description: | Record is based on bibliographic data in ProQuest U.S. Executive Branch Documents, 1789-1909. Reuse except for individual research requires license from ProQuest, LLC. Electronic resource. |
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| Physical Description: | 1 online resource (8 pages) : illustrations |
| Format: | System requirements: PDF reader software. |