In 1940, on the eve of the United States' entrance into World War II, then-President Franklin D. Roosevelt's Immigration and Naturalization Service wanted to promote tolerance toward immigrants.
At that time, radio was the most important medium in the U.S. More than 80 percent of American households had a radio, and people listened for three or four hours every day. So, to reach the American people, the agency made a radio show.
This story appeared both as a radio piece on All Things Considered and a story at Atlas Obscura. Continue reading on NPR or read the original story