In 1903 William S. Harley and Arthur Davidson started building bikes (https://www.harley-davidson.com/us/en/museum/explore/hd-timeline.html) in a 10 X 15 shed that was hardly big enough to construct a massive fleet of motorcycles.
In four short years Harley Davidson moved to a new location with 18 employees and a huge factory floor. This was just the beginning of their dominance on the road, and within the decade they were producing one of their most well known motorcycles, the V-twin powered bike.
By 1924 William and Arthur had taken Harley Davidson from a small wooden shack to company that was capable of sending their bikes to thousands of dealers across the world.