Letter to Helen G. McCormack from John Mead Howells (Mar. 30, 1942) about his contribution to This is Charleston, the section "The National Value of Charleston."
Letter to John Mead Howells from Helen Gardner McCormack (Jan. 20, 1941) regarding miscellaneous matters related to the architectural survey and exhibit.
"Report of the Charleston Regional Planning Committee, Operating Under a Grant from the Carnegie Corporation" (June 20, 1941), which describes the purpose of the Committee and the status of the architectural survey.