In the 19th century, literature about these Argentine cowboys was popular, with Jose Hernandez' "Martin Fierro" a classic
[DOC] [TLE] Patagonia with Buenos Aires and Santiago - Longitude Books [PAR] Natural Patagonia, Argentina and Chile  Marcelo D. Beccaceci ... A colorful map 
of the popular areas of Parque Nacional Los Glaciares at a scale of 1:230,000, ...