The Samuel Clemens story here in the Bronx was that he lived for awhile at Wave Hill, today a cultural performance place and center for horticulture in Riverdale. I once mapped its trees to update its maps. The story was that Samuel Clemens kept a tree-house there for interviews with press, eventually beyond his means. Perhaps it was over litigation over "The Prince and the Pauper" later required reading in NYC. Wave Hill later had resident Arturo Toscanini, composer and conductor of the NBC Orchestra, and later the British Embassy compound. A young JFK lived in Riverdale until the market crashed and his dad moved away from investing in the "talkies" in NYC. Open to the public, it is a fine place to stand where he once sometimes stood on the ground, if not in a tree.
Smithsonian Magazine “Mark Twain In Love”