Bonhams Cars : 1937 Harley-Davidson EL Knucklehead Engine no. 37EL1094
1937 Harley-Davidson EL Knucklehead for Sale at Auction - Mecum Auctions
1937 Harley Davidson Knucklehead - Sinless Cycles
Dale's Wheels Through Time - " '37 Flatty Bobber". This 1937 Harley Davidson UMG 80" Flathead features rare magneto ignition and TT-oil tank with raised transmission. It's made numerous trips through hundreds
1937 Harley-Davidson WL - YouTube
What's This 1937 Harley-Davidson Knucklehead Really Worth?