I just saw a great picture of this from 1885: http://calumet412.com/post/58699298036/street-grade-elevation-work-at-an-undisclosed http://calumet412.com/post/58

I just saw a great picture of this from 1885: http://calumet412.com/post/58699298036/street-grade-elevation-work-at-an-undisclosed http://calumet412.com/post/58699298036/street-grade-elevatio...