IRT Flushing Line was created in 1915.
Times Square - IRT Flushing Line - was created in 1917.
Junction Boulevard - IRT Flushing Line - was created in 1917.
Hunters Point Avenue - IRT Flushing Line - was created in 1916.
IRT Pelham Line was created in 1918.
IRT Dyre Avenue Line was created in 1941.
IRT Eastern Parkway Line was created in 1908.
IRT New Lots Line was created in 1920.
IRT Third Avenue Line was created in 1878.
IRT Ninth Avenue Line was created in 1868.
IRT Lexington Avenue Line was created in 1904.
IRT Jerome Avenue Line was created in 1917.
IRT Nostrand Avenue Line was created in 1920.