Inside South America

Gunther, John, Inside South America, New York: Harper and Row, 1967.

John Gunther (August 30, 1901 – May 29, 1970) was an American journalist and author whose success came primarily through a series of popular sociopolitical works known as the "Inside" books (1936–1972), including the best-selling Inside U.S.A. in 1947.
(…)
The books that made Gunther famous in his time were the "Inside" series of continental surveys. For each book, Gunther traveled extensively through the area the book covered, interviewed political, social, and business leaders, talked with average people, reviewed area statistics, and then wrote a lengthy overview of what he had learned and how he interpreted it.