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Hammond House: Home

“The Hammond House” by Leo Helmholz-Junker

painting of hammond house

Source: Original painting owned by New York Medical College. 
Gift of Miss Blanche Potter, 1931.

Other Works by Leo Helmholz-Junker, 1880-1974

Scientific American cover by Leo Helmholz-Junker

Scientific American Cover, 1913




painting by Leo Helmholz-Junker

Winter Landscape (Pelham Wood, NY), 1917

Source: Artnet



Leo Helmholz-Junker

Moonlit Garden, 1931

Source: Artnet

History of Hammond House

hammond house

Hammond House is one of the earliest surviving colonial farm houses in Westchester County, New York. It was built in 1719 by Captain William Hammond, a Philipse Manor tenant. It is located at the former entrance to New York Medical College where Hammond House Road used to intersect Route 100C. ¹

Westchester County Historical Society, the owner since 1926¹,  sold Hammond House to New York Medical College in 1989² because the Society had been unsuccessful in its efforts to persuade New York City to sell the land. The society's board decided it could not justify doing the needed restoration of the house when the land was only leased, not owned. The College planned to renovate the building and use it as a Lyme disease research center. ² Instead,  the College sold Hammond House to Michael Rock in 1997, who then sold it to Frederick Rock, an art collector and private dealer, the same year³.  Frederick Rock is still the owner of the building and opens it by appointment.⁴  


1. U.S. Department of the Interior. National Register of Historic Houses Inventory. Accessed May 23, 2013. 

2. New York Medical College. College to use Hammond House for Lyme disease research. Newswire. 1989; 16(19):1-4.

3. Westchester County. Deed of Sale, June 30, 1997. 

4. Frederick Rock. Hammond House Fine Art. Accessed May 23, 2013. 

College Purchases Hammond House, 1989

Newswire cover

Source: New York Medical College. College to use Hammond House for Lyme disease research. Newswire. 1989; 16(19):1-4.

Current Owner of Hammond House, Frederick Rock

Frederick Rock