1940'S U.S.A. FIRST DAY COVERS
1940 Booker T. Washington - $20
postmarked April 7, 1940
1940 50th Anniversary of the Pan-American Union - $10
postmarked April 14, 1940
1947 Postage Stamp Centenary - $20
postmarked May 17, 1947
1948 U.S. Air Mail First Flight Wisconsin Rapids - $25
postmarked February 24, 1948
1949 Minnesota Territorial Centennial - $20
postmarked June 14, 1949
