In 1903, the Yankee steam-powered car inventor Freelan Oscar Stanley (1849–1940) was stricken with a life-threatening resurgence of tuberculosis. The most highly recommended treatment of the day was fresh, dry air with much sunlight and a hearty diet. Therefore, like many "lungers" of his day, Stanley resolved to take the curative air of the Rocky Mountains. He and his wife Flora arrived in Denver, Colorado, in March and, in June, on the recommendation of Dr. Sherman Grant Bonney, moved to Estes Park, Colorado, for the rest of the summer. Over the season, Stanley's health improved dramatically. Impressed by the beauty of the valley and grateful for his recovery, he decided to return every year. He lived to 91, dying of a heart attack in Newton, Massachusetts, one year after his wife, in 1940.