Clayton remained the family’s primary residence until they moved to New York in 1905. When they left Pittsburgh, the Fricks left behind much of their life there, including 93% of Clayton’s original contents—an impressive array of fine and decorative art objects.

The mansion that houses the Nassau Country Museum of Art, in Roslyn Harbor, was originally built by Lloyd Stephens Bryce utilizing the Neo-Georgian designs of architect Ogden Codman.