Haupt, H. (1852). Documents referring to the controversy between the canal commissioners of the state of Pennsylvania and the Harrisburg and Lancaster and the Pennsylvania railroad companies: With remarks upon the relative position of the state improvements and the Pennsylvania railroad. Philadelphia: T.K. and P.G. Collins, printers.

Haupt, Herman. Documents Referring to the Controversy between the Canal Commissioners of the State of Pennsylvania and the Harrisburg and Lancaster and the Pennsylvania Railroad Companies: With Remarks Upon the Relative Position of the State Improvements and the Pennsylvania Railroad. Philadelphia: T.K. and P.G. Collins, printers, 1852.

Haupt, Herman. Documents Referring to the Controversy between the Canal Commissioners of the State of Pennsylvania and the Harrisburg and Lancaster and the Pennsylvania Railroad Companies: With Remarks Upon the Relative Position of the State Improvements and the Pennsylvania Railroad. Philadelphia: T.K. and P.G. Collins, printers, 1852.