There's...there's a door, it goes home to the 30's. To Coney Island. I'm not sure the year exact but it's middle or late 30's so if you go through you might want to be careful about what you wear. And keep your phone's hidden. You'll need something other than paper cash but if you go just a little ways in to Queens you'll be able to find somewhere to sell things. You'll have to keep it to things like jewelry or books (check the dates) or things like that. The electronics won't be worth anything and could get us in hot water.
But...it's Coney Island. It's this really great amusement park with a beach, and a boardwalk, and fair food, and games and if you catch a train or a cab there's real easy access to the rest of New York.