Manuscripts, with related correspondence, memoranda, and notes of Howe's lectures, speeches, reports, articles, poems, and other writings, 1920s-1930s; correspondence, memoranda, and reports relating to Howe's tenure as Chair of the Yale University Department of Architecture; clippings, correspondence, and legal documents, 1932-1935, relating to the dissolution of his architectural firm, Howe & Lescaze; correspondence, memoranda, and accounts relating to Howe's work with LIFE Magazines's Life Houses program ("new houses for modern living"), 1939-1940; correspondence between Robert A.M. Stern and numerous architects, family, and friends of Howe, all related to Stern's research for his monograph on Howe, 1962-1974; and curriculum vitae, a diary of a trip to Mexico, 1932, photographs, clippings, printed material, and miscellaneous documents, relating to professional honors and activities, and personal life. Also, letters from leading artists and architects including William Kozlenko, Maxwell Levinson, Philip Johnson, Norman L. Rice, Louis I. Kahn, Robert J. Buffler, Howard Robertson, Roger W. Sherman, Dominque Berninger, and Irving Bowman, endorsing Howe for the 1933 Philadelphia Award (which he did not receive).
Also, correspondence with Norman Bel Geddes, Monroe Biddle, John M. Blair, Harry T. Carman, Carolyn K. Christenson, Joseph S. Clarke, Jr., Thomas H. Creighton, Paul Cret, C.C. Cunningham, F.G. Fassett, Jr., Loring Dowst, John E. Harbeson, Oliver Hall, Jared C. Ingersoll, Gaylord P. Harnwell, William Fontaine Jones, Joseph Judge, William Lescaze, John D. Morse, William F. Paris, Charles E. Peterson, Ruth C. Roberts, Henry Shapiro, Oscar Stonorov, J.J. Sweeney, James M. Willcox, Owen J. Wister, Frank Lloyd Wright, Bruno Zevi, and others. This relates to proposed development of air rights over New York City's Pennsylvania Railroad Station, 1955; architectural projects in Pennsylvania relating to mental health, 1955; proposed new Independence Mall Building in Philadelphia, 1955; the 1954 Boston Art Festival Architectural Exhibit; sculpture committee on the design of the Ella Butt McManus monument, Connecticut, 1954-1955; the Philadelphia Saving Fund Society, building designed by Howe & Lescaze (with related memoranda, manuscripts of articles and talks, press releases, and architectural analyses), 1930-1939; and the Jefferson National Expansion Memorial, St. Louis (with related printed material, clippings, and photograph).