1938 Feb. 4
New York (N.Y.) - Enclosing a $5 check towards W. E. B. Du Bois's 70th birthday fund, and offering to do "whatever else will be required to make this event a success."
W. E. B. Du Bois Papers
1946 May 8
Pittsburgh (Pa.) - Includes return address portion of envelope; congratulating the Du Bois's on their 50th wedding anniversary.