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History of Allegheny County
Pittsburgh's great industries
Greater Pittsburgh's commercial and industrial development
150 years of unparalleled thrift : Pittsburgh Sesqui-Centennial, chronicling a development from a frontier camp to a mighty city : official history and programme
Greater Pittsburgh exposition, 1895
Sixth annual exposition
The Builder - May, 1901
Fifty-years of the Chamber of Commerce of Pittsburgh
Industries and wealth of Pittsburgh and environs, 1890.
Pittsburgh of to-day
The Builder - January, 1906
Pittsburgh's Industrial Exposition 1891
The Builder - December, 1903
Pittsburgh II
Semi-centennial of the Chamber of Commerce of Pittsburgh, 1874-1924.
The Builder - December, 1906
The Index
The Pennsylvania Railroad : its origin, construction, condition, and connections ...