"Regional Planning" American City magazine; "Regional Planning and Zoning in California"; "Re-Planning a Mission City for California Southland"; "Report Concerning the Platting of Land in Akron, Ohio." City Planning Institute at Baltimore, Maryland. January 29, 1921; "Report of Committee Upon Revision of Membership Procedure for the American City Planning Institute; "Report of Committee on Professional Remuneration" American City Planning Institute Annual meeting January 18-19, 1936; "A Review of State Planning Progress and Potentialities." March 4, 1938; "Rural and Rural-Industrial Housing" National Resources Board.; "Discussion of 'Rural Zoning as an Adjunct to State Highway Improvement'". City Planning Division of the American Society of Civil Engineers; "Discussion of 'Rx to Prevent Depression; by William Parker." National Conference on Planning, Boston, May 16, 1939., 1921-1938

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.