The Records of the Bethlehem Mines Corporation Police Department, 1926-1935, include various reports of the police department of Bethlehem Mines Corporation, for the mines that the company operated in Southwestern Pennsylvania. These records primarily pertain to activities of the police department at mines operated under the corporation's subsidiary, the Ellsworth Collieries Company. These mines were located in Washington County, Pennsylvania. Much of the material pertains to the communities of Cokeburg, Ellsworth, and Marianna. The reports are arranged by year. Note: Reports for 1931 are not included in this collection.