Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 / The New York Tunnel Extension of the Pennsylvania Railroad. / The Cross-Town Tunnels. Paper No. 1158

by James H. Brace; Francis Mason

FOOTNOTES:

[A] Presented at the meeting of December 1st, 1909.

[B] Of the paper by Mr. Noble.

[C] Of the paper by Mr. Noble.

[D] Of the paper by Mr. Noble.