The New York Transit Museum Store and Transit Gifts have some neat posters for sale like the one above by Julia Rothman and a blown up photo of Grand Central Station from 1934.

To get to New York City, I usually take Amtrak's Northeast Regional train (or the Acela, if I'm looking for more comfort and a quicker ride) from Boston’s South Station direct to New York’s Penn Station.  I've also traveled on the Bolt Bus, which was fine. I personally prefer having more space to work/read/watch the world go by while traveling by train. Have you ever used public transit to visit New York City?