Bump starting a 1929 Harley, with a 1936 Crocker
The Harley needed the help, and the Crocker was the only motorcycle with a clear back tire not protected by a rear full fender Photo by Bob Stokstad, who makes articles for motorcycle magazines: https://www.cycleworld.com/2010/10/01/pebble-beach-concours-delegance-special-feature#page-15