The Adlerian Archives of the Sol and Elaine Mosak Library preserves the collective memory of Individual Psychology through primary and secondary sources on its founder, Alfred Adler, and on Rudolph Dreikurs, founder of the Adler School of Professional Psychology.

This rich collection contains a wide variety of materials by and about the central figures of Individual Psychology, including correspondence, biographical documents, manuscripts, photographs, professional papers, audiovisual materials, reprints, and research notes. Highlights of the manuscript collection are correspondence and manuscripts of Alfred Adler and Rudolf Dreikurs, and the papers of Oliver Brachfield, Rudolf and Sadie Dreikurs, Edward Hoffman, Harold Mosak, Bernard Shulman, Oskar Spiel, and Lewis Way.