This museum was very nice, but a little on the small side. There is room for about 7 exhibits, and there is 3 major ones, and a few upstairs. Glad I went for free, because I don't think it would be worth the $10 dollars. The Charles Addams's New York was really nice, and I learned something, I had no idea he was from NY. The America's Mayor John Lindsey exhibit was also very informative, and pretty big. The Cars, Culture, and the City exhibit, I never found, I'm sure I could have asked, but the place was so small, I forgot about it until I pulled the map out 20 minutes ago. Upstairs, there was a New York Interiors, which was 6 rooms behind glass, and a hallway of photos of the city, which is billed as New York Through the Lens: Photographs from the Permanent Collection.
The neighborhood the museum is in is not the best, but also not the worst. I walked 3 blocks from the subway at 103rd St. I took the 6 train. Here are a few pictures, the rest are here.