Conrad Poppenhusen (April 1, 1818 – December 12, 1883)[1] was a German American businessman. He was also a philanthropist, a founder of College Point, Queens, and the founder of the first free kindergarten in the United States (on July 1, 1870).[2][1][3]
- ^ a b "Poppenhusen Park". NYCGovParks.org. Retrieved August 22, 2016.
- ^ "History". PoppenhustenInstitute.com. The Poppenhusen Institute. Retrieved August 22, 2016.
- ^ Brunetto, Daniel P.; Smith, Raymond W. (July 1976). "National Register of Historic Places Registration: Poppenhusen Institute". New York State Office of Parks, Recreation and Historic Preservation. Archived from the original on 2012-10-18. Retrieved 2011-01-12. See also: "Accompanying three photos". Archived from the original on 2012-10-18. Retrieved 2012-06-19.
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