[en] [Gutenberg 50696] • Railway Construction Theclassics.Us
[en] [Gutenberg 18408] • Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 / The Site of the Terminal Station. Paper No. 1157 Createspace Independent Publishing Platform
[en] [Gutenberg 18229] • Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 / The New York Tunnel Extension of the Pennsylvania Railroad. / Paper No. 1150 Createspace Independent Publishing Platform
[en] [Gutenberg 4684] • The U. P. Trail Ryetown Classics
[en] [Gutenberg 41825] • The Road Builders The Macmillan Company