Oscar Handlin was an American historian. As a professor of history at Harvard University for over 50 years, he directed 80 PhD dissertations and helped promote social and ethnic history, virtually inventing the field of immigration history in the 1950s. Handlin won the 1952 Pulitzer Prize for History for The Uprooted (1951). Handlin's 1965 testimony before Congress was said to "have played an important role" in passage of the Immigration and Nationality Act of 1965 that abolished the discriminatory immigration quota system in the US.
Oscar Ivar Levertin was a Swedish poet, critic and literary historian. Levertin was a dominant voice of the Swedish cultural scene from 1897, when he started writing influential high-profile essays and reviews in the daily paper Svenska Dagbladet.
Oscar Abelardo Masotta was an Argentine essayist, artist, teacher, semiotician, art critic, and psychoanalyst. He was associated with the Torcuato di Tella Institute. He translated Jacques Lacan's works into Spanish and introduced his psychoanalytic philosophy to Latin America.
Oscar Méténier was a French playwright and novelist. In 1897 he founded Le Théâtre du Grand-Guignol in Paris, planning it as a space for naturalist performance.
Oscar Devereaux Micheaux (; was an American author, film director and independent producer of more than 44 films. Although the short-lived Lincoln Motion Picture Company was the first movie company owned and controlled by black filmmakers, Micheaux is regarded as the first major African-American feature filmmaker, a prominent producer of race films, and has been described as "the most successful African-American filmmaker of the first half of the 20th century". He produced both silent films and sound films.
Oscar Phelps Austin was an American statistician. The earlier years of his life were spent in journalism, and he served as reporter, editor, and correspondent.
Oscar Terry Crosby was an American engineer, executive, author, and explorer. A West Point graduate, he served as the United States Assistant Secretary of the Treasury during World War 1.
