Thomas Edison began his career selling candy, newspapers and vegetables on the trains running from Port Huron to Detroit. He turned a $50 a week profit by age 13, most of which went to buying equipment for electric and chemical experiments. He became a telegraph operator after he saved three-year-old Jimmie MacKenzie from being struck by a runaway train. Jimmie's father, station agent J. U. MacKenzie of Mount Clemens, Michigan, was so grateful that he trained Edison as a telegraph operator. Edison's first telegraphy job away from Port Huron was at Stratford Junction, Ontario, on the Grand Trunk Railway. He was held responsible for a near collision. He also studied qualitative analysis and conducted chemical experiments on the train until he left the job.