
via Library of Congress, no known restrictions
Mrs. Sally Halterman, the first woman to be granted a license to operate a motorcycle in the District of Columbia – September, 1937
 

via Library of Congress, no known restrictions
Men on Motorcycles, Summer of 1922

via Library of Congress, no known restrictions
Motorcycle squad on Harleys near Casa Grandes, Mexico; Mexican – U.S. campaign after Villa, 1916

via Library of Congress, no known restrictions
U.S. Mail Carrier wearing boots and riding gloves, sometime after 1909

via Wikimedia Commons, public domain
Racer sits on his Indian motorcycle between heats in Indianapolis, 1909

via Library of Congress, no known restrictions
Metropolitan police officer with motorcycle, Washington, D.C. – 1932

via Library of Congress, no known restrictions
Mr. & Mrs. Willie Kay on their Indian Tricar, 1906

From Keene Public Library and the Historical Society of Cheshire County New Hampshire via Wikimedia Commons, no known restrictions
Man on Harley Davidson motorcycle with woman in sidecar, tents in background, 1911

via Library of Congress, no known restrictions
Motorcycle police in Washington, D.C. – 1922