1927 June 7
Du Bois, W. E. B. (William Edward Burghardt), 1868-1963
New York (N.Y.) - Concerning the work of the Public Health Service.
1948 May 17
United States . Public Health Service
Washington (D.C.) - Signed Herbert P. Dunning, for Halbert L. Dunn, Chief, National Office of Vital Statistics; enclosing the requested data on U.S. demographics and referring him to the Office's annual volumes of "Vital Statistics" for further information thereon.