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Helen & Adelaide Frick
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Homestead Riots of 1892
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View of Pittsburgh in 1859
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Pittsburgh in 1974
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G.C. Murphy Company in 1974
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Diamond Market House in 1961
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Pittsburgh in 1948
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Joseph Horne and Company
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Diamond Market House in 1908
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Pittsburgh in 1890
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Armed Forces Day Parade
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Hillside Homes of Pittsburgh
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Evolution of Heinz Ketchup
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Forbes Field