Here’s a timetable from the end of the Golden Age of passenger trains. Though only half the size of most timetables, this one has 72 pages, the equivalent of 36 pages in a regularly sized table. The larger size would probably have been more legible, as many of the schedules in this one only show traffic in one direction, so travelers had to skip back and forth between pages to plan round trips.
Southern certainly was a hopping railroad in 1925, having six trains a day each way between Washington and Birmingham, with four trains from Birmingham to New Orleans. There were also six trains a day each way between Cincinnati and Chattanooga, and four or more on several other routes. The narrow timetables have enough room to display four trains a day in each direction, but counting local trains some routes have as many as eight in each direction. For example, there are eight trains between Washington and Manassas and seven between Charlotte and Danville.