Bertha Maria Júlia Lutz ( August 2 , 1894 – September 16 , 1976 ) was a Brazilian zoologist , politician , and diplomat . Lutz became a leading figure in both the Pan American feminist movement and human rights movement . She was instrumental in gaining women 's suffrage in Brazil and represented her country at the United Nations Conference on International Organization , signing her name to the United Nations Charter . In addition to her political work , she was a naturalist for the National Museum of Brazil , specializing in poison dart frogs . She has three frog species and two lizard species named after her
United Nations Conference on International Organization
United Nations Conference on International Organization
Bertha Lutz