51 Market Street, ca. 1978.

This four-story building, also known as the William and Rosamond Clark House, was constructed in 1824-25 by an unknown architect. Designed for William Clark, a grocer, the building is an early example of the Late Federal style on the Lower East Side. The home was erected at a time when the neighborhood was an affluent residential area. While the structure may not appear particularly architecturally distinguished today, the building was one of the first to be designated after the Landmark Commission was created in 1965.