Folder 1: Berenson, Bernard and Mary (1933–1935) [5 items].
Folder 2: Bliss (1942): correspondence between Robert Woods Bliss and Mildred Barnes Bliss, 1942, during the period she was in Santa Barbara closing her mother’s house, Casa Dorinda.
Folder 3: Bliss (1946–1958): correspondence and related documents to and from Mildred Barnes Bliss and/or Robert Woods Bliss.
John Beckwith (1958).
Nadia Boulanger (undated).
R. Keith Kane (1949).
Alice Kindler (1947).
Lady Wilmot Lewis (1946).
Nan Mitchell (undated).
Folder 4: Bliss, Robert Woods (1932–1957).
Milton V. Anastos (1957).
Charles Diehl (1932).
Jenny Egan (1957).
Annie Lou Herron (1950).
Charles Hoyt (1944).
Lincoln Kirstein (1959).
Ambrosius Lauriotes, Father (1957).
Walter Spencer Robertson (1955).
Folder 5: Bliss, William Henry (1904–1924): correspondence and related documents mostly concerning the Bliss genealogy and portraits of Philemon Bliss (father of William Henry Bliss).
Folder 6: Bliss, William Henry (1906–1918): general correspondence with Mildred Barnes Bliss and/or Robert Woods Bliss.
Folder 7: Bryce, James (1910).
Folder 8: Buenos Aires (1928–1933).
Eduardo J. Bullrich (1932).
Enrique Bullrich (1932).
José A. Carvalho (1933).
Alfredo Colmo (1932–1933).
Cecelia Davies (undated).
Marcelina Irigoyen de Rodriguez (1929).
Lyman O. Dudley (1933).
Enrique Gil (1930–1933).
Victor D. Goytía (1932–1933).
Dorothy Kingsford (1933).
Adela Mildred Mella (1930).
Ernest Nelson (1933).
Elizabeth Perkins (1932).
Jorge J. Ruzzier (1930).
Fritz Werner (1931).
Folder 9: Central America (1935): copies of correspondence in the Pre-Columbian Collection Archives from Robert Woods Bliss to Mildred Barnes Bliss during his travels in Central America in 1935.
Folder 10: Lawrence and Victoria Collidge (Tytus) (1928–1931).
Folder 11: Lawrence and Victoria Collidge (Tytus) (1932–1934).
Folder 12: Lawrence and Victoria Collidge (Tytus)(1935–1940).
Folder 13: Colon Opera House, Buenos Aires, Argentina.
Folder 14: Robert T. Coolidge (2010).
Folder 15: Geoffrey Dodge (1920–1921).
Folder 16: Geoffrey Dodge (1922–1925).
Folder 17: Geoffrey Dodge (1926–1928).
Folder 18: Geoffrey Dodge (1929–1932).
Folder 19: Geoffrey Dodge (1933–1936).
Folder 20: Geoffrey Dodge (1937–1940).
Folder 21: Fogg Art Museum (1941–1950).
Elizabeth Bland (1946).
Alberta Carpenter (1946).
John Coolidge (1950).
Helen Crowley (1945).
Jerome D. Greene (1941).
Arthur Pope (1945).
Hubbert R. Quinter (1946).
Dorothy Snow (1946).
Elizabeth Strassmann (1946).
Susan B. Sturgis (1945).
John S. Thacher (1946).
Folders 22–32: Garden Library, Letters of Appreciation.
Folder 33: Marcel Grandjany (1922–1923).
Folder 34: Frank A. Gunther (1928).
Folder 35: Sascha Jacobsen (1941–1942).
Folder 36: Susan Jay (1928).
Folder 37: Rutgar Jewett (1921–1933).
Folder 38: Leila Megane Jones (1922–1932).
Folder 39: C. H. F. Kinderman-Walker (1908–1941).
Folder 40: D. Tracey Lay (1927).
Folder 41: Nina Leach-Lewis (1930).
Folder 42: Thérèse Malye, (1923–1926).
Folder 43: Thérèse Malye (1927).
Folder 44: Thérèse Malye (1928).
Folder 45: Thérèse Malye (1929).
Folder 46: Thérèse Malye (1930).
Folder 47: Thérèse Malye (1931).
Folder 48: Thérèse Malye (1932–1939).
Folder 49: Violet Markham (1923–1953).
Folder 50: Newell Marshall (1930).
Folder 51: Thurgood Marshall (1955).
Folder 52: Henry De Courcy May (1943–1948).
Folder 53: Miscellaneous (1921–1967)
Folder 54: New England Historic Genealogical Society (1930). John Carroll Chase, President (letter) (1930)
Folder 55: New York School of Applied Design for Women (1912–1913): re: Dorinda Blaksley Scholarship.
Folder 56: Langdon Warner (1929).