View of construction during the hump removal project on Sixth Avenue, looking from the northeast corner at the intersection with Wylie Avenue. The First Class Barber Shop, Holland House, and Cut Rate Pharmacy storefronts are visible. The "hump" cut took place in the downtown area known as Grant's Hill. The project began with planning in 1909 and ended with the final cut in 1913. It changed the gradient of Grant Street, Diamond Street, and Oliver, Fifth, Sixth, Webster and Wylie Avenues. Please see Frederick Law Olmstead, Pittsburgh Main Thoroughfares and the Down Town District: http://digital.library.pitt.edu/cgi-bin/t/text/text-idx?c=pitttext&view=toc&idno=00aep1324m for more information.
Sixth and Wylie can be seen here:
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