As far back as the early fifties this great work of rebuilding the trunk-line railroads was begun.
National participation, however, should be confined to trunk-line systems.
It now looks as if they were the only way through for a majority of the trunk-line railroads.
The seven vertical rows of keys, immediately to the right of the three trunk-line rows, are the line keys.
The problem of that Eastern road of a dozen years ago is to-day that of virtually every trunk-line of the Northeast.
If you are going to attempt great things, remember you are starting on a trunk-line.
Before the panic of 1857 the trunk-line railways had completed their net of tracks between the Mississippi and tidewater.