L.W. Cushing and Sons. Catalogue of weather vanes manufactured by L.W. Cushing and Sons, 1883. Downtown Gallery records, 1824-1974. Archives of American Art, Smithsonian Institution.
Elie Nadelman. Elie Nadelman letter to Edith Gregor Halpert, 1937 Jan. 9. Downtown Gallery records, 1824-1974. Archives of American Art, Smithsonian Institution.
Downtown Gallery (New York, N.Y.). Downtown Gallery (New York, N.Y.) letter to Elie Nadelman, New York, N.Y., 1937 Feb. 9. Downtown Gallery records, 1824-1974. Archives of American Art, Smithsonian Institution.