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The '''Pennsylvania Railroad''', chartered in 1846, was one of the most important railroads in the United States. For many years was the largest corporation in the world, with a peak of 10,000 miles of tracks in heavily industrialized parts of the east, and 250,000 employees.   

The '''Pennsylvania Railroad''', chartered in 1846, was one of the most important lines in the [[Railroad history]] of the United States. For many years was the largest corporation in the world, with a peak of 10,000 miles of tracks in heavily industrialized parts of the east, and 250,000 employees.   

==Herman Haupt==

==Herman Haupt==

Herman Haupt played the leading  role in the early development and growth of the Pennsylvania Railroad, 1847-56. His work on original surveys, tracklaying, and bridge building operations led to his promotion to chief engineer. He fought for reduced freight tonnage taxation (to allow for competition with canal traffic) and he influenced the extension of track throughout the Midwest.   

Herman Haupt played the leading  role in the early development and growth of the Pennsylvania Railroad, 1847-56. His work on original surveys, tracklaying, and bridge building operations led to his promotion to chief engineer. He fought for reduced freight tonnage taxation (to allow for competition with canal traffic) and he influenced the extension of track throughout the Midwest.