An unofficial return of the 9 train

Late one night recently, I was riding the 1 line uptown and happened upon this roll-sign showing the old 9 number used when I was growing up. From what I remember when I was younger, the 9 train did skip-stops along 7th Avenue on the IRT line after the 2/3 trains split into the East side of Manhattan and the Bronx.

With today’s population boom in Upper Manhattan along Broadway (specifically in Hamilton Heights and Washington Heights), it would be great if we could get skip-stop service back to relieve some congestion on the 1 line.