This very cool animated map of the history of the New York City Subway by Appealing Industries has been making the rounds on the internet the past few days (WNYC, Transportationist, Untapped Cities, Gothamist, and elsewhere), so of course I had to jump on the bandwagon.
But in doing so, I want to point out that there is at least one thing missing from the map: the eastern end of the IRT New Lots Line—specifically, the Van Siclen Av and New Lots Av stations, served at most times by the 3 train. These stations opened on 16 October 1922, which would put them right after the opening of the New Lots Line from Pennsylvania Av west and just before the opening of the BMT Canarsie Line, today known as the L train.
Do you notice anything else missing from the map?
Dustin Tyler Joyce 