Personal correspondence, speeches, subject files, photographs, and printed and miscellaneous material of Hogan. The correspondence, speeches, and other material relate primarily to his activities as District Attorney, and to his unsuccessful campaign for the U.S. Senate, 1958. The papers also reflect Hogan's deep concern for Columbia University, as a Trustee and a member of numerous alumni committees. Among the major correspondents are Harry J. Carman, Dwight David Eisenhower, Robert F. Kennedy, Arthur Hays Sulzburger, and Herbert Bayard Swope.

The Plimpton Family Papers is primarily comprised of correspondence, personal and professional documents, writings and photographs generated by or for George Arthur Plimpton and Frances Taylor Pearsons Plimpton, their son, Francis T.P. Plimpton, and his wife Pauline Ames Plimpton. Also included are documents and photographs produced by or for other Plimpton, Pearsons and Ames family members, from seventeenth century ancestors to late-twentieth century descendants.