JF Ptak Science Books Quick Post
There is a deep beauty in the imagery of maps with contour lines. This is found over and over again here, and tonight it rose from piecing together an enormous map of Gettysburg and its approaches. Here is an example:

Source: A Map of Gettysburg and Antietam. From: The Military Engineer, the journal of the Society of Military Engineers, published at the Mills Building, Washington, D.C., 1925-1927.
