New Jersey Real Estate Board; Adult Education Council, New York, October 1938; Bergen County Garden Clubs, December 1937; Newark Citizen's Housing Council, November 9, 1942; New Jersey League of Women Voters, Neward, February 2, 1938; Newark Planning Dinner, March 7, 1941; Memorial Meeting for Sir Raymond Unwin, New York City, November 12, 1940; To Trenton Engineers' Club, April 23, 1931; "Theory of Planning the Region as Exemplified by the Philadelphia Tri-State Plan". July 1930; "The Third Front. A Job for State and Local Government." New Jersey Municipalities. October 10, 1942; "Too Big -- Too Complex -- Or Too Inert?" Readers Digest Competition Closing, May 1, 1936; "Review" Toward New Towns for America, by Clarence Stein; "Trees and Other Public Plantings"; "Tree Planing Upon the Country Roadside.", 1931-1942

Correspondence, reports, notes, questionnaires, articles, maps, contracts, pamphlets, brochures, ordinances, and legal notices related to city and state planning, primarily in the mid-Atlantic states. In addition to his private practice, papers deal with Black's membership in the Commonwealth Club of San Francisco; participation in the initial activities of the Regional Plan Association of San Francisco Bay Counties; and various other state and federal planning efforts in the 1930's. Correspondents include Frederick J. Adams, Thomas Adams, Charles Stern Ascher, Tracy Baldwin Augur, Liberty Hyde Bailey, Harland Bartholomew, Edward Murray Bassett, Alfred Bettman, Frederick Bigger, Walter Harold Blucher, Harold Sinley Buttenheim, Gilmore David Clarke, Arthur Coleman Comey, Jacob Leslie Crane, Jr., Frederick Dohram, Earle Sumner Draper, R.F. Engle, Livingston Farrand, Carl Feiss, Benjamin Antrim Haldeman, Justin Richardson Hartzog, Henry V. Hubbard, Harlean James, Harold MacLean Lewis, Thomas William Mackesey, Albert Mayer, Eugene Davis Montillon, Lewis Mumford, John Nolen, Robert Randall, Irving Root, Ladislas Segoe, Flavel Shurtleff, Clarence S. Stein, Armand Tibbitts, L. Deming Tilton, Raymond Unwin, Lawrence Veiller, Warren Jay Vinton, Samuel Price Wetherill, Jr., Gordon Whitnall, Robert M. Whitten, and Henry C. Wright.