We’re going to direct you to a website where you can watch a really neat slide show depicting rangering through the years. See if you can spot President Gerald Ford, then 23, the only President ever to serve as a national park ranger. Ford called it “one of the greatest summers of my life,” and his supervisor called him “a darn good ranger.”

The National Park Service’s arrowhead emblem was authorized on July 20, 1951. Like the ranger’s familiar “Smokey the Bear” Stetson hat, the Arrowhead is now an American icon. The origin and evolution of the Arrowhead is an interesting story.