Bloomingdale Neighborhood Conservation Association.
|Louis L. and Nettie S. Horch Papers, circa 1920s-1960s
|Columbia University. Avery Architecture and Fine Arts Library. Department of Drawings and Archives.
|Horch, Louis L. Louis L. and Nettie S. Horch Papers, circa 1920s-1960s.
|Columbia University in the City of New York, Columbia University Libraries