1939 Harley-Davidson Seventy-Four UL Flathead | Gooding & Company
Dale's Wheels Through Time - Pre-war Knuck - By 1939, Harley-Davidson was in its fourth year of producing the powerful 61c.i. OHV Model EL - the "Knucklehead". Dale built this machine from
1939 Harley-Davidson EL Base | Hagerty Valuation Tools