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https://explore.chicagocollections.org/records/?f1-names=Sullivan%2C+Louis+H.%2C+1856-1924&f2-topics=Natural+%26+Built+Environments%3A%3ARoads&f3-topics=Natural+%26+Built+Environments%3A%3ARailways&f4-topics=Natural+%26+Built+Environments%3A%3ARailways&f5-topics=Natural+%26+Built+Environments%3A%3ARoads&f6-institutions=Chicago+History+Museum&f7-topics=Work%3A%3AOccupations