Pan American Society of the United States was established in 1910 in New York City.
History
It was established in 1910 in New York City for "the promotion of the sentiment of brotherhood" among the American nations, and "especially the cultivation of good fellowship" between the people of the United States and those of Central America and South America. Elihu Root was suggested as the first president.
References
Pan American Society Wikipedia(Text) CC BY-SA