Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910, The Cross-Town Tunnels. Paper No. 1158Note A — THE NEW YORK TUNNEL EXTENSION OF THE PENNSYLVANIA RAILROAD. THE CROSS-TOWN TUNNELS.[A]Reading editionPresented at the meeting of December 1st, 1909.◇Copy noteReturn to THE NEW YORK TUNNEL EXTENSION OF THE PENNSYLVANIA RAILROAD. THE CROSS-TOWN TUNNELS.[A]