This map of Paraguay and the Rio de la Plata basin is the work of Willem Blaeu (1571-1638), the founder of a famous Dutch mapmaking dynasty. Blaeu studied astronomy, mathematics, and globe-making with the Danish scholar Tycho Brahe before establishing his mapmaking studio in Amsterdam. In 1633, he was appointed mapmaker of the Dutch East India Company. In 1635, together with his sons Joan and Cornelis, Blaeu published the Atlas Novus (New atlas), an 11-volume work consisting of 594 maps. Indians of South America; Jesuits; Pantanal; Rio de la Plata (Argentina and Uruguay)