User:Kew Gardens 613/List of exit-only New York City Subway entrances

This is a list of New York City Subway entrances that are exit-only. Additional information would be appreciated, including dates when they became exit-only and former exit-only entrances. Proper citations would be appreciated, whether they are newspaper articles detailing their opening, NYCTA documentation, or images showing their existence. A lot of entrances became entrance and exit only after the introduction of the MetroCard in the late 1990s and early 2000s as High Entry Exit Turnstiles (HEETs) were installed.