- Pennsy Power
- Pennsy Power II: Steam Diesel and Electric Locomotives of the Pennsylvania Railroad
- Erie Power: Steam and Diesel Locomotives of the Erie Railroad from 1840 to 1970
- B & O power;: Steam, diesel, and electric power of the Baltimore and Ohio Railroad, 1829-1964,
- The Many Faces of the Pennsy K-4 - Classic Power No. 6












