New York State Route 39 (1920s–1930)

New York State Route 39 (1920s–1930) refers to a former designation for a state highway in New York. Established as part of the initial numbered highway system in New York in the mid-1920s, this iteration of Route 39 generally connected communities in the western part of the state. The route's precise termini and alignment varied slightly over its existence. However, it generally ran roughly east–west.

The initial establishment of Route 39 was intended to improve connectivity and facilitate transportation between smaller towns and villages in western New York. Roads given state route designations were usually maintained at a higher standard than county or local roads, improving accessibility and travel times.

The specific routing of the original Route 39 is difficult to ascertain definitively without detailed historical maps. Highway renumberings and realignments in the 1930s, a common occurrence during that period as the state's highway system evolved, led to the elimination of this designation. Some sections of the original Route 39 may have been incorporated into other state routes. The historical designation is of interest primarily to transportation historians and researchers studying the evolution of the New York State highway system. The numerical designation "39" was later reassigned to a different route in the western part of the state.