The Jockey Journal points to some awesome footage of board track racing from the early 20th century. As the story goes, the footage was shot by the Czech importer of Indian motorcycles during a visit to the United States. This may or may not be accurate, since the story also claims it was shot at a board track in Daytona that never existed.
It’s remarkably good footage and includes some sidecar racing. These guys were real men — I can’t imagine taking a spill on that track. If anyone has any idea what track is really shown, leave a comment.