The Brooklyn Allergist's Office That Was Once Home to a SpyAn antislavery spy who worked for the British in New York in the 1800s lived in a house that is now home to an allergy doctor descended from Horace Greeley.
Source: The Brooklyn Allergist's Office That Was Once Home to a Spy (https://www.nytimes.com/2025/07/06/realestate/streetscapes-brooklyn-british-spy.html)