United States of America, New York, Nassau County, Glen Cove
New York (State)
Griswold, Mac and Weller, Eleanor. Golden Age of American Gardens. N. Y., N. Y.: Harry N. Abrams, Inc. in association with the Garden Club of America, 1991, p. 102. Charles Platt planted a pinetum before 1890. Welwyn is now a nature preserve. No glass slide.
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