First there is what I had supposed was a “one and only,” a streamliner built on a 1931 Henderson KJ chassis by one crazy dude, Orley Courtney, in 1935 or so. The bike was an obvious choice, since all Hendersons beginning about 1912 were 4-in line, IOE engined and the engines had been refined over time and grown from 67 cid up to 80. The KJ was the last Henderson model, as Schwinn canceled all his side enterprises in 1933 to focus on bicycles for the Depression. The KJ was made from 1929 - 32.
At the beginning of the depression, the Big 3 American bikes were HarleyDavidson, Indian, and Henderson. At this point in time, there are probably more Hendersons extant in Europe than in the US due to Schwinn’s marketing arm (he bought the company in 1926.)