This first picture, from the 9/22/08 NY Times, is of the Cubs-Giants playoff game on Oct. 8, 1908 at the Polo Grounds (north Manhattan).
Notice how the trees are bare.
Now compare this to a Webcam picture I just captured today, of Pier A in Hoboken, NJ (just across the river, to the west, of NYC):
The trees are still green and don't even appear to be changing color yet.
This last one isn't the best picture and perhaps you have a better one -- if so, please let me know.