Paraguay, by W. H. Koebel. Scribner, 1917. 348 p. $4.50.
Peru
Peru, by E. C. Vivian. D. Appleton, 1914. 235 p. $3.00. Good handbook.
Uruguay
Uruguay, by W. H. Koebel. Scribner, 1911. 350 p. $4.50.
Venezuela
Venezuela, by L. V. Dalton. T. Fisher Unwin, London, 1918. 320 p. $4.50.
Valuable articles may be found in many magazines. Monographs of the different countries have been published by the Pan American Union and by the Bureau of Foreign Commerce.