According to blogger, Save the Slope, a blog dedicated to neighborhood preservation, Al Capone was a Park Sloper and he’s got the details and research to prove it. Here’s an excerpt from his interesting blog post:

Young Al is associated with two addresses in Garfield Place, and with P.S. 133. According to his Wikipedia article, his family first lived at 38 Garfield Place, on the south side of the block between 4th & 5th Avenues: