This links to an interesting article on Plugger Martin at "The Bike Comes First" Website.
"One of the most remarkable cyclists ever to emerge from Ireland, is a name that may be unfamiliar to many – 'Plugger' Bill Martin. Not only did he make his mark with his performances on the bike, but he has also been credited with some innovations which helped to revolutionise the sport."
It's a very insightful article and a glimpse into the early years of Cycling.
Plugger Martin - World Champion
