Sheldon Brown was an amateur photographer, vintage bike collector, and bicycle professional who lived in Newton, Massachusetts. He was the parts manager for Harris Cyclery. Sheldon was a strong supporter of year-round bicycle commuting. The reason he is noted is that he published a website with considerable and well-photographed information about bicycle technology. Rather than a top-down approach, the way a comprehensive book about bicycle technology might be written, he delved into specific topics of interest with great detail, often specializing in information not found elsewhere. His website is still available at SheldonBrown.com. Sheldon died in 2008 at age 63 of a heart attack after a three-year struggle with multiple-sclerosis. Toward the end, when he could no longer ride a conventional bicycle, he rode a recumbent tricycle. He did much to advance bicycle advocacy and knowledge in his 763 months on Earth.