The professional papers of Lillian Hoddeson that include transcripts of oral history interviews she conducted with A. A. Abrikosov, David Allender, Ansel Anderson, Herbert Lawrence Anderson, Philip W. Anderson, William Anspacher, Bill Baker, Bill Bardeen, Jane Bardeen, Ravin Bhatt, H. W. Bode, Ralph Bown, Robert Brattain, Dan Cudzik, Lloyd Espenschied, Jim Gibbons, Norman D. Haney, Nick Holonyak, Gordon Moore, Jack A. Morton, Harry Nyquist, Jack Scaff, Bob Schrieffer, Glenn Seaborg, Frederick Seitz, Harry Sello, Mark Shepher, Emmy Shockley, William Shockley, Ralph Simmons, Charles Slichter, Myron Solomon, Morgan and Betty Sparks, John Tucker, Bill Wallenmeyer, Bill Werstler, and Fred Zawadowski. Some of the interviews were conducted by Irving Elichirigoity, Alison Kerr, Vicki Daitch, Michael Riordan, Tanya Irving, Lincoln Barnett, William Hammack, Julian Tebo, Lewis Gunn, Kris Fowler, Joe Tillman, and Steve Weiss. Included are working files of published articles, research material and correspondence used to write her books on the history of solid state physics, Fermi National Accelerator Laboratory, transistors, Bell Telephone Laboratory, and John Bardeen as well as her numerous articles that include the American Institute of Physics, Hans Bethe, Felix Bloch, Niels Bohr, Richard Bozorth, Walter Brattain, Ernst Braun, Laurie Brown, Oliver Buckley, Vannevar Bush, Karl Darrow, Peter Debye, P. A. M. Dirac, Michael Eckert, Richard Feynman, Paul Forman, Samuel Goudsmit, William Conyers Herring, Paul Hoch, Alan Holden, Frank Jewett, Mervin Kelly, Martin Klein, James Koehler, Thomas Kuhn, Lev Landau, Karl Lark-Horovitz, Los Alamos National Laboratory, Robert Maurer, Emanuel Maxwell, William McMillan, Nevill Francis Mott, National Academy of Science, Russell Ohl, Wolfgang Pauli, Rudolf Peierls, David Pines, A. B. Pippard, radar, Michael Riordan, Jack Scaff, Frederick Seitz, semiconductors, William Shockley, John Clarke Slater, Roman Smoluchowski, Arnold Sommerfeld, E. H. Sondheimer, Jurgen Teichmann, Texas Instruments, Spencer Weart, Vicktor Weisskopf, Western Electric, Addison White, and Eugene Wigner; and audio cassette copies of some of her interviews with prominent physicists (including many of the transcripts listed above) and lectures she attended.