"Memorandum- The Garden City Versus Subsistence Homesteads"; "General Nature and Scope of the Planning Job in Philadelphia." Philadelphia City Planning Commission, June 23, 1943; "Good Planning is the Best Insurance for New Housing or More Enduring Housing Through Better Planning," The National Housing Committee; "The Growth and Development of Cities with Particular Respect to the Factors Underlying the Centralization and Decentralization of Population," Research Department of the University of Pennsylvania by the Regional Planning Federation of the Philadelphia Tri-State District., 1943, undated

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.