About Roslyn
Timeline
of Roslyn History
View Historic Postcards
From the Bryant
Room
Collections Inventory
Reminiscences of My
Boyhood in Roslyn by Roy Moger
Additional Information Cedarmere
Roslyn
Schools
Roslyn
Village
Town
of North Hempstead
Village
of East Hills
William C. Bryant
Bryant Collection from the University of Virginia
Long Island Maps
Mackay History
Newsday’s Long Island History
Newspaper: Brooklyn Daily Eagle 1841-1902
Long Island Forum
Mackay, Clarence H.
(1874-1938)
Son of "Silver King" John W. Mackay, industrialist Clarence H. Mackay inherited his father's business interests and fortune. In 1898 he and his newlywed wife, Katherine Duer, obtained property in what is now the East Hills area of Roslyn, Long Island. Here, on the highest point in Nassau County, they erected a mansion called, "Harbor Hill." Designed by architect Stanford White, this elaborate mansion was torn down in the early 1950's to make way for a housing development.
The Mackay's and their estate had lasting impact on the Roslyn area. Photographs, news clippings, papers and documents are available for research in the library's Local History Collection.