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Regional History Center & NIU Archives: 1946-1960
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Regional History Center & NIU Archives: DeKalb Commerical Body Corp, c 1940
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Regional History Center & NIU Archives: Rockford Photo Service
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Regional History Center & NIU Archives: J. H. Ditzler & Sons Trucking Company
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Regional History Center & NIU Archives: J. H. Ditzler & Sons Trucking Company
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Regional History Center & NIU Archives: Smith Oil and Refining Company, 1951
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Regional History Center & NIU Archives: Valley Metal Products, 1952
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Regional History Center & NIU Archives: Wurlitzer, 1956
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Regional History Center & NIU Archives: Kable Printing Company, 1952
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Regional History Center & NIU Archives: Kable Printing Company, 1960
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Regional History Center & NIU Archives: Kable Printing Company, 1960
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Regional History Center & NIU Archives: Kable Printing Company, 1969