Stephens, H. L.  1824-1882 <br/><br/>
Journeys and Experiences in Argentina, Paraguay, and Chile :  Including a Side Trip to the Source of the Paraguay River in the State of Matto Grosso, Brazil, and a Journey Across the Andes to the Rio Tambo in Peru  [electronic resource] / 
H. L. Stephens 
 -  Project Gutenberg,  2014 
 - Project Gutenberg  44692 .
<br/><br/> Public domain in the USA. 
<br/><br/>Electronic text