Erie Lackawanna Railway | Morristown, New Jersey | MU Trailer car #3228 | August 21, 1976 | William Rosenberg photograph | Morning Sun Books collection | 35mm Kodachrome slide | The EL MU cars date back to the early 20th century, as steam hauled cars, later retrofitted to run on electrified commuter lines out of Hoboken, N.J. Retired by NJT in August 1984, many were sold to tourist lines, and hauled behind steam and diesel locomotives.