Correspondence, appointment books, solicitor general files, case and office files of the U.S. Court of Appeals, speeches and writings, subject file, and miscellany relating to Sobeloff's involvement in Baltimore and Maryland law and politics, his duties as solicitor general (1954-1955), especially actions concerning school desegregation and the Subversive Activities Control Board, cases heard before the Fourth Circuit U.S. Court of Appeals (1956-1973), his associations with the American Bar Association, the National Council on Crime and Delinquency, the Baltimore Urban League, and various Jewish groups, including the American Jewish Congress. Includes three reels of microfilm reproducing 14 volumes of scrapbooks (1914-1972).

Correspondents include David L. Bazelon, Warren E. Burger, William O. Douglas, Dwight D. Eisenhower, Felix Frankfurter, Clement F. Haynsworth, J. Edgar Hoover, Jacob K. Javits, Robert F. Kennedy, Harold Leventhal, Theodore R. McKeldin, H. L. Mencken, John Johnston Parker, John Paul, Morris Ames Soper, R. Dorsey Watkins, and J. Skelly Wright.