Months after the Art Dealer’s Association of America (ADAA) terminated its longstanding partnership with the social services nonprofit Henry Street Settlement, the organization has announced a surprising new beneficiary for its fair at the Park Avenue Armory this fall: the Whitney Museum of American Art.  ADAA’s announcement of a new philanthropic relationship with the Manhattan museum is the latest twist in the association’s sudden distancing from the Henry Street Settlement last summer. Last August, the ADAA, a membership organization of 200 art dealers from 40 cities, canceled the 2025 edition of its over three-decade-old fair, the Art Show in New York City. The event had been a source of about $1 million in unrestricted funding for the Henry Street Settlement, which provides Lower East Siders with health care, arts programming, and food and housing services.…