<page_title> List of national memorials of the United States </page_title> <section_title> National Park Service national memorials </section_title> <table> <cell> De Soto <col_header> Name </col_header> <col_header> Arkansas Post </col_header> <col_header> Arlington House, The Robert E. Lee Memorial </col_header> <col_header> Chamizal </col_header> <col_header> Coronado </col_header> </cell> <cell> March 11, 1948 <col_header> Date established </col_header> <row_header> De Soto </row_header> </cell> </table>
The De Soto National Memorial was established on March 11, 1948.