Source:Hopkins-1907-allegheny-vol-1
From Pittsburgh Streets
Real Estate Plat-Book of the City of Allegheny, vol. 1. G. M. Hopkins & Co., Philadelphia, 1907. http://historicpittsburgh.org/maps-hopkins/1907-volume-1-plat-book-allegheny; included in the 1903–1906 layer at Pittsburgh Historic Maps (https://esriurl.com/pittsburgh).
