Correspondence, notes, and writings of Sayre, including materials pertaining to his work for various organizations, public and private, concerned with problems in public administration. There is also a subject file containing notes and other materials gathered by Sayre for use in publications and lectures. The correspondence is extensive, and consists of routine business correspondence, occasional letters (uncataloged) from such persons as William Ronan and other city and university officials, and files of correspondence with members of the family of Senator Robert M. La Follette. Catalogued correspondents include Chester Bowles, Dumas Malone, Bennett Cerf, and Fiorello La Guardia.