(1867). The Pennsylvania system of fast freight lines, as exemplified by Union line, and the Empire line, operating between the Atlantic cities and the great west, over the Pennsylvania and Phild'a & Erie railroads, and the western railways connecting therewith: A record of facts authenticated by the official investigations and reports of the Committee of the Legislature of Pennsylvania, the Committee of the stockholders of the Penn'a R.R. Co. and the testimony and reports of the officers of connecting railroads. Philadelphia.

The Pennsylvania System of Fast Freight Lines, As Exemplified By Union Line, and the Empire Line, Operating between the Atlantic Cities and the Great West, Over the Pennsylvania and Phild'a & Erie Railroads, and the Western Railways Connecting Therewith: A Record of Facts Authenticated By the Official Investigations and Reports of the Committee of the Legislature of Pennsylvania, the Committee of the Stockholders of the Penn'a R.R. Co. and the Testimony and Reports of the Officers of Connecting Railroads. Philadelphia, 1867.

The Pennsylvania System of Fast Freight Lines, As Exemplified By Union Line, and the Empire Line, Operating between the Atlantic Cities and the Great West, Over the Pennsylvania and Phild'a & Erie Railroads, and the Western Railways Connecting Therewith: A Record of Facts Authenticated By the Official Investigations and Reports of the Committee of the Legislature of Pennsylvania, the Committee of the Stockholders of the Penn'a R.R. Co. and the Testimony and Reports of the Officers of Connecting Railroads. Philadelphia, 1867.