You searched for: Author O'Hara and Zeese Civil engineers and Surveyors Remove constraint Author: O'Hara and Zeese Civil engineers and Surveyors Collection John R. Borchert Map Library Remove constraint Collection: John R. Borchert Map Library Institution Minnesota Remove constraint Institution: Minnesota Place Aitkin County, Minnesota, United States Remove constraint Place: Aitkin County, Minnesota, United States Data type Image Remove constraint Data type: Image