Re-Pin with credits... 'Taking No Chances' - A mother fastening a notice reading 'Please Mr Motorist, watch out for me', onto her son's back before he sets out on a trial bicycle ride. 1st Jan. 1937. (Photo by Hulton Archive/Getty Images). S)
life: Nice ride, Andy Koslow. Here, the Chicago bicycle dealer rides a tiny bike built by a former vaudevillian. “This helps limber up his left leg,” LIFE wrote, “which, as a former motorcycle racer, he broke seven times.” (Wallace Kirkland—Time & Life Pictures/Getty Images) See more photos here.