The classic portal of the Pennsylvania's new station in New York 102 The beautiful concourse of the new Pennsylvania Station, in New York 103 "The waiting-room is the monumental and artistic expression of the station"--the waiting-room of the Union Depot at Troy, New York 103 Something over a million dollars' worth of passenger cars are constantly stored in this yard 114 A scene in the great freight-yards that surround Chicago 114 The intricacy of tracks and the "throat" of a modern terminal yard: South Station, Boston, and its approaches 115 One of the "diamond-stack" locomotives used on the Pennsylvania Railroad in the early seventies 126 Prairie type passenger locomotive of the Lake Shore Railroad 126 Pacific type passenger locomotive of the New York Central lines 126 Atlantic type passenger locomotive, built by the Pennsylvania Railroad at its Altoona shops 126 One of the great Mallet pushing engines of the Delaware & Hudson Company 127 A ten-wheeled switching locomotive of the Lake Shore Railroad 127 Suburban passenger locomotive of the New York Central lines 127 Consolidation freight locomotive of the Pennsylvania system 127 Where Harriman stretched the Southern Pacific in a straight line across the Great Salt Lake 140 Line revision on the New York Central--tunnelling through the bases of these jutting peaks along the Hudson River does away with sharp and dangerous curves 140 Impressive grade revision on the Union Pacific in the Black Hills of Wyoming. The discarded line may be seen at the right 141 The old and the new on the Great Northern--the "William Crooks," the first engine of the Hill system, and one of the newest Mallets 154 The Southern Pacific finds direct entrance into San Francisco for one of its branch lines by tunnels piercing the heart of the suburbs 155 Portal of the abandoned tunnel of the Alleghany Portage Railroad near Johnstown, Pa., the first railroad tunnel in the United States 155