Found this in Kemistry gallery. I've never been to New York but I want to one day and hopefully I won't leave this at home when I do!
Inside is the City Subway Map with some little stickers which you can mark your favourite places with.
Without the map and stickers - compartments for pass card and ticket.
One side of the map. Excuse my feet, I needed to hold it flat while I took the photo!! It blurred when I held it up.
The other side.
A better photograph of the cover with a cut-out hole so you can see the map through it.