1901 Pan-American Exposition

1902 Second Bureaus

1904 Louisiana Purchase Exposition

  • 132 Livingston 1c Green
  • 133 Jefferson 2c Carmine
  • 134 Monroe 3c Violet
  • 135 McKinley 5c Dark Blue
  • 136 Map of Louisiana Purchase 10c Red Brown

1907 Jamestown Exposition

1908-1922 Third Bureaus: Washington-Franklins

1920 Pilgrim Tercentenary

1922-1925 Regular Issue

1923-1925 Regular Issue Vertical Coils

1923-1925 Regular Issue Horizontal Coils


1926-1934 Regular Issue


1929 Kansas-Nebraska Overprints


1931-1940

1932 Washington Bicentennial


1934-1935 National Parks


1936-1937 Army Navy Issues


1938-1954 Presidential Series (Prexies)


1939 Presidential Series Vertical Coils

1939 Presidential Series Horizontal Coils


1940 Famous Americans Series
Authors

Poets

Educators

Scientists

Composers

Artists

Inventors


1941-1950

1943 Overrun Countries Flags


1950 National Capital Sesquicentennial