Alicia Moreau de Justo was an Argentine politician and doctor who was a leading figure in feminism and socialism in Argentina in the early 20th century. She co-founded the Socialist Feminist Center and Union Guild Femenina in 1902 to advocate for greater women's rights. Azucena Maizani was an Argentine tango singer and songwriter who was popular in the early 1900s, recording over 270 songs and performing on radio and theater under the nickname "The Gaucho Ñata." Carolina Elene Lorenzini was an Argentine aviator who broke the South American female altitude record in 1935, reaching 5,381 meters by plane.