In 1936, postal worker Victor H. Green worked with his colleagues in the Postal Workers Union to create a guide for black travelers navigating a country where many restaurants, hotels, and shops were still "whites only," and the real threat of physical assault and arrest hung in their faces.
"You needed The Green Book to tell you where you can go without having doors slammed in your face," civil rights leader Julian Bond once said.
The Green Book was updated and in print until 1966.
"There will be a day sometime in the near future when this guide will not have to be published," reads the introduction.
More at Atlas Obscura: "Object of Intrigue: A Jim Crow Era Guide for Black Travelers" (Thanks, David Steinberg!)
Previously: "New York Public Library does the public domain right"