In the 1980s, Roosevelt led excavations and geophysical surveys of the mound Teso dos Bichos, and concluded that the society that constructed the mounds originated on the island itself.
Franklin D. Roosevelt | Theodore Roosevelt | Eleanor Roosevelt | Franklin Delano Roosevelt | Anna University | Anna Nicole Smith | Anna Moffo | Anna Karenina | Roosevelt | Order of St. Anna | Anna Pavlova | Kermit Roosevelt | Antonio López de Santa Anna | Anna Akhmatova | Anna | All India Anna Dravida Munnetra Kazhagam | Anna Magnani | Anna Kournikova | Anna Wintour | Anna Hyatt Huntington | Anna Bolena | Alice Roosevelt Longworth | St. Luke's-Roosevelt Hospital Center | Anna Vissi | Anna Friel | Theodore Roosevelt, Jr. | Kate and Anna McGarrigle | Elliott Roosevelt | Anna Politkovskaya | Anna Faris |