Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 / The New York Tunnel Extension of the Pennsylvania Railroad. / The North River Tunnels. Paper No. 1155
Transcribers' Notes: Some tables don't sum to the numbers indicated; no corrections have been made. All numbers are from the original. Minor inconsistencies in hyphenation have been retained.
AMERICAN SOCIETY OF CIVIL ENGINEERS
INSTITUTED 1852
TRANSACTIONS
Paper No. 1155
THE NEW YORK TUNNEL EXTENSION OF THE PENNSYLVANIA RAILROAD. THE NORTH RIVER TUNNELS.[A]
By B. H. M. Hewett and W. L. Brown, Members, Am. Soc. C. E.
