If it's a historical biopic about Wyatt Earp, did they go back in time and bring him in for a cameo? How did this happen?

After success cleaning up Dodge City, Wyatt Earp moves to Tombstone, Arizona, and wishes to get rich in obscurity. He meets his brothers there, as well as his old friend Doc Holliday. A band of ...

Decades before the town of Tombstone was the subject of a hit Kurt Russell movie, it was the setting of a cool comic book series ...