| Answer | Crossword Clue |
|---|---|
| IRT | NYC subway line since 1904 |
| IRT | NYC subway that opened in 1904 |
| IRT | NYC commuting option since 1904 |
| IRT | NYC line that opened in 1904 |
| IND | NYC subway line |
| BMT | NYC subway line |
| IRT | NYC subway line |
| IRT | Subway line of NYC |
| IND | Former NYC subway line |
| IRT | Old NYC subway line |
| IRT | Original subway line in NYC |
| IRT | First subway line in NYC |
| IRTS | Belonging to an NYC subway line |
| BMT | NYC subway line named for two boroughs |
