Lincoln Ellsworth was an American explorer and businessman, born on July 12, 1880, in Chicago, Illinois. He is best known for his polar expeditions in the early 20th century, particularly his flights over Antarctica in the 1930s. Ellsworth's adventures contributed significantly to the mapping and understanding of the Antarctic region. In 1935, Ellsworth made a notable flight across the continent, which helped to gather valuable data about its geography. He was also involved in various scientific and exploratory projects, collaborating with other prominent figures in exploration, such as Roald Amundsen. Ellsworth passed away on June 26, 1951.