1904 LOUISIANA PURCHASE COMMEMORATIVES SCOTT #323-327

  The Louisiana Purchase, obtained from France in 1803 for $15 million, almost doubled the size of the United States, and encouraged westward expansion. It was commemorated in 1904 with this series.
  Interesting fact--these stamps were not well received by the public. Collectors at the time did not purchase large quantities of the stamps, and the series was on sale for only 7 months. As a result, well centered unused stamps are extremely difficult to obtain.