Alfred Habegger, email to Victoria Sears Goldman, March 20, 2013, in CMA curatorial file.
David Steinberg, letter to Alfred Habegger, May 16, 1994, in CMA curatorial file.
Frank Zuccari, email to Marcia Steele, June 26, 2014, in CMA curatorial file.
Habegger, Alfred. The Father: A Life of Henry James, Sr. New York: Farrar, Straus, and Giroux, 1994.
James, Henry. A Small Boy and Others. New York: C. Scribner's Sons, 1913.
Perkins, Robert F., William J. Gavin, and Mary Margaret Shaughnessy. The Boston Athenaeum Art Exhibition Index, 1827-1874. Boston, Mass: The Library of the Boston Athenaeum, 1980.
Victor D. Spark Papers, Series 4.2, Other Financial Records, 1930-1981, Box 17, Folder 6, Stock Books, 1958-1960, Archives of American Art, Smithsonian Institution.
Victor Spark, letter to Henry S. Francis, June 10, 1960, in CMA curatorial file.
William S. Talbot [?], notes on a telephone conversation with Howard S. Merritt, Oct. 1, 1982, in CMA curatorial file.