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The commercial, industrial, and transportation interests of the city of Pittsburgh
General catalogue 1911. Frick Co.
Pittsburgh of to-day
Pittsburgh and Western Pennsylvania
Up-Town, Greater Pittsburg's classic section : East End, the world's most beautiful suburb.
Industry 1908
General catalogue 1912. Frick Co.
Steel mine timbers 1908
The Pennsylvania Railroad : its origin, construction, condition, and connections ...
Greater Pittsburgh : the  iron city
150 years of unparalleled thrift : Pittsburgh Sesqui-Centennial, chronicling a development from a frontier camp to a mighty city : official history and programme
Bartlett Hayward
A history of manufactures in the Ohio Valley to the year 1860
Greater Pittsburgh's commercial and industrial development
Industry 1907
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