The ethnographic collections of about 5,000 items collected by Emil Hassler in northern Paraguay and Chaco and displayed at the World's Columbian Exposition in Chicago in 1893 were acquired by the Field Museum, Chicago [REF].
Other ethnographic collections of about 10,000 items made during Hassler's expeditions between 1885 and 1895 were purchased in 1919 by the Museum of Cultures, Basel, Switzerland.