[posted] Posted (#42149, Hewett and Brown) !

[David Widger]

American Society of Civil Engineers, by B. H. M. Hewett and W. L. Brown  42149
  [Full title: Transactions of the American Society of Civil Engineers,
                Vol. LXVIII, Sept. 1910]
  [Full author: B. H. M. Hewett and W. L. Brown]
  [Subtitle: The New York Tunnel Extension of the Pennsylvania Railroad.
              The North River Tunnels. Paper No. 1155]
  [Link: http://www.gutenberg.org/4/2/1/4/42149 ]
  [Files: 42149.txt; 42149-8.txt; 42149-h.htm]

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David