Track Charts are a summary of rail, ballast, and right-of-way features and conditions on the railroad. Generally, the charts were constructed on a rolled piece of graph paper, drawn to scale, showing milemarkers at the top and a wide range of information below. The Erie Lackawanna's charts included rail weight, ballast type, degree of track curvature, a rough track schematic, a grade profile, signal locations, signal types and numbers, and right-of-way features like culverts, bridges, etc.

Here is the legend from the 1975 Scranton Division chart:
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And this is the beginning of the chart, showing the location of rail, ballast, and other information on the charts themselves:
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