Letter to Robert N.S. Whitelaw from Charles F. Colbert, Jr. (Pittsburgh Metallurgical Co.) (April 21, 1945) congratulating CSC for city planning publication.
Letter to Robert N.S. Whitelaw from architect Robert D. Kohn (Feb. 13, 1940) praising the capabilities of Albert Simons with regard to the proposed city planning project.
Letter to Frederick P. Keppel from Robert N.S. Whitelaw (Dec. 29, 1939) thanking him for the consultant fee and recommending he read "Charleston, the Great Myth" by Edward Twig.