Olmsted Report 
The following images and text have been excerpted from Pittsburgh Main Thoroughfares and the Down Town District: Improvements Necessary to Meet the City's Present and Future Needs, A Report by Frederick Law Olmsted 
On special park opportunities: 
"Perhaps the most striking opportunity noted for a large park is the valley of Nine Mile Run. Its long meadows of varying width would make ideal playfields; the stream, when it is freed from sewage, will be an attractive and interesting element in the landscape; the wooded slopes on either side give ample opportunity for enjoyment of the forest, for shaded walks and cool resting places; and above all it is not far from a large working population in Hazelwood, Homestead, Rankin, Swissvale, Edgewood, Wilkinsburg, Brushton and Homewood; and yet it is so excluded by its high wooded banks that the close proximity of urban development can hardly be imagined. If taken for park purposes, the entire valley from the top of one bank to the top of the other should be included, for upon the preservation of these wooded banks depends much of the real value value of the park."
-Frederick Law Olmsted Jr., 1910