From http://chroniclingamerica.loc.gov/lccn/sn83045462/1908-08-23/ed-1/seq-43/
Evening Star newspaper. (Washington, D.C.), 23 Aug. 1908. Chronicling America: Historic American Newspapers. Library of Congress.
In Washington, a city of few hills and with asphalt streets and but little congestion, the messenger boy prefers to ride a bicycle to the more ancient but slower method of walking. The bicycle boy, if he is working by the "piece," of course, makes more money than his rival on foot, so that the spirit of emulation drives many messengers to save enough money to purchase wheels, so consequently they have no money to spend on novels.From an odd article about what messengers in Washington DC read.