I have real pleasure in complying with the suggestion that I should write an introduction to this interesting and instructive work by Mr. Harry Weston Van Dyke. As it was through me that he was led to make his studies and investigations which resulted in the preparing of this book, I naturally find much gratification in the success with which he has handled the responsibility. No one can read his travel story of South America without being impressed with the importance of these countries, the enjoyment and value of visiting them, and the advantage of the development of closer relations between all of them and the United States. As the executive officer of the Pan American Union, an international organization maintained in Washington by all the American republics, twenty-one in number, including the United States, for the advancement of commerce, friendship, and peace among them all, it is my lot to realize, possibly better than any one else, the remarkable growth of interest which is being manifested now, not only throughout the United States but in all parts of the world, in the countries of the southern portions of the American continent commonly classed as Latin America. When the Pan American Union was reorganized about five years ago, and it began an active propaganda for making the twenty Latin American republics better known in the United States, and correspondingly, the United States better known among them, there was little cause for encouragement. The average newspaper editor, the man in public life, the manufacturer, the exporter, the importer, the traveler, and the student seemed to be largely absorbed in studying and watching the development of our commercial relations with Europe and the Orient, and not with Latin America. The persistent and continued effort, however, of the Pan American Union in educating the world to the importance of the Latin American countries and to an appreciation of the commercial opportunities and moral responsibilities of the United States in its relations with them, has now resulted in a complete change of conditions which is indeed gratifying. To-day the manufacturers and merchants in all parts of the world, the editors of American and European and even Asiatic newspapers, special writers on foreign subjects, lecturers, members of Congress, professors and students in universities and colleges, librarians, professional and amateur travelers are corresponding with the Pan American Union or visiting its headquarters in order to gain accurate information about the Latin American republics.