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1. Illustrated description of the Broadway pneumatic underground railway, with a full description of the atmospheric machinery, and the great tunneling machine
books
- Published: S.W. Green, printer: New-York. 1870
- Format: books
- Online: click here for full-text
- Catalog Record: check availability
2. Opinion of John Jacob Astor and William Astor on a Broadway underground railway
books
- Published: s.n.]: New York. 1884
- Format: books
- Online: click here for full-text
- Catalog Record: check availability