@SFOMuseum Twitter Posts This is SFO Museum's archive of the @SFOMuseum Twitter account.
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Excelsior was one of the “Big Three” American motorcycle brands during the 1910s, along with Harley-Davidson and Indian. Like other motorcycle makers, Excelsior had deep roots in bicycling. Their first model used a Thor engine built under license. #EarlyAmericanMotorcycles . This tweet was posted on May 10, 2021.