Erie Lackawanna Railway
Delaware Otsego was founded in 1966 to operate a small section of the former New York Central Railroad Catskill Mountain Branch outside Oneonta, New York. This was the first of many cast-off short line acquisitions. Between 1971 and 1986, D.O. acquired several other branches and short lines, including the Cooperstown Branch of the Delaware &amp; Hudson Railway in 1971; the Richfield Springs Branch of the Erie Lackawanna Railway (EL) in 1973, the Fonda, Johnstown and Gloversville Railroad in 1974, and the EL Honesdale Branch in 1976.