‘…(T)he Historic Graffiti Society has found no concrete evidence that hobo code existed. Wray says decades-old claims in newspaper articles are unsubstantiated. The symbols said to be used by hoboes are often contradictory. And while there are photographs of hobo signs taken in the early 1900s, Wray adds, those were staged by newspapers. “Modern Americans are convinced that hobo signs are authentic history, but the evidence against it definitely outweighs the evidence for it,” Wray says.
— via Atlas Obscura