Harley-Davidson co-founder as well as lifelong chief Engineer and Designer. Uncommon TLS signed “Wm. S. Harley,” one page, 8.5 x 10.5, Harley-Davidson Motor Co. letterhead, June 10, 1937. Letter to a Harley-Davidson sales and service manager in Florida. In part: “We recognize the trouble that we have with leakage around one valve on the 61” motor…we have done a great deal of work to find the correct method to remedy the situation. On the matter of front wheel brakes, I agree with you that this year’s brake is not quite as good as last year’s…We are also working on a method to remedy this situation. This muffler thing is a very serious problem with us…If everybody would use this as it should be used it would be allright, but the majority of riders would leave the butterfly open and have their motorcycles sound like cannons. We do not feel that we have made an error in using Stewart speedometers…we feel the speedometer is a very good job.” In fine condition, with scattered light creasing a small area of trivial discoloration, a vertical fold through a letter of the signature. COA PSA/DNA (this lot was part of a larger group lot) and R&R COA.