Substantial assistance came from Louis B. Wehle, the Justice's nephew;
Josephine and Pauline Goldmark, his wife's sisters; Edward F. McClennen
and Jacob Kaplan, his former law partners; Miss E. Louise Malloch, his
former secretary; Mrs. Alfred Brandeis, his sister-in-law; the Misses Fanny
and Adele Brandeis, his nieces; Paul Freund and Willard Hurst, former
law clerks; Mrs. Florence Boeckel and Mrs. Josephine January, close friends
of the family; A. A. Berle, Sr., a co-worker in Boston public campaigns;
Charles C. Burlingham of the New York Bar, a friend since law-school
years; the late Richard W. Hale of the Boston Bar; and the late Joseph B.
Eastman of the Interstate Commerce Commission.

Besides using the roomful of Brandeis papers at the University of Louis-
ville, and numerous other sources friendly and unfriendly to the Justice
and his work, I have worked through official records, reports, and pam-
phlets, scores of files of magazines and newspapers bearing upon his career.
The effort has been to cover the entire field and to present the subject in a
spirit of impartiality. In this endeavor many others have co-operated:
George W. Alger, Beulah Amidon, F. F. Baldwin, Roger W. Baldwin,
Jacob Billikopf, Raymond P. Brandt, Clarence S. Brigham, H. I. Brock,
Robert W. Bruère, Clyde S. Casady, Lelia E. Colburn, Charles Townsend
Copeland, John H. Cramer, Mrs. Jacob De Haas, Judd Dewey, Felicia
Deyrup, Irving Dilliard, Justice William O. Douglas, Abram G. Duker,
Lincoln Filene, Edward C. Finney, Abraham Flexner, Justice Felix Frank-
furter, Elisha M. Friedman, Benjamin Goldstein, August Gutheim, Arthur
D. Hill, Frederick M. Kerby, Paul Kellogg, Pennell C. Kirkbride, the late
Louis E. Kirstein, Fola La Follette, Morris S. Lazaron, Max Lerner, Judge
Louis E. Levinthal, Judge Julian W. Mack, Max Meyer, Richard Neuberger,
George Wharton Pepper, Gifford Pinchot, James Morgan Read, Edward
A. Richards, James L. Richards, Charles G. Ross, George Rublee,
Mrs. Morris Saval, Harry A. Slattery, Mrs. Joseph B. Speed, Kenneth M.
Spence, the late Harlan F. Stone, Robert S. Szold, Thomas E. Wag-
gaman, Herbert White, and Robert W. Woolley.

The resources of various libraries have been freely and fully at my dis-
posal. Grateful recognition is due to Miss Pearl Weiler, Librarian, and
J. N. Lott, Jr., Dean, University of Louisville Law School, for supplying
material from the Brandeis collection; to Mr. Malcolm O. Young, Reference
Librarian, Princeton University, for innumerable services; and to Miss
Katharine Brand, Special Custodian, Woodrow Wilson papers, Library
of Congress, for making accessible the relevant documents in that collection.

Financial help, without which this book could not have been written,
came from various institutions -- The Rockefeller Foundation, Princeton
University, and the Palestine Economic Corporation.

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