John Sherry has been illustrating knots and writing about knots for more than 25 years. His knot illustrations are used for training by the US Department of Defense, US Customs and Border Protection, municipal fire departments, scout troops, sailing schools, utility companies, arborist companies and many search and rescue organizations, not to mention countless fishermen/women. He is president of Pro-Knot, a company that publishes waterproof plastic knot cards for boaters, campers, survivalists, fishermen and anyone that finds themselves with a rope or line in hand. He has sold over one million of the popular knot card sets and has more 5-Star reviews (over 1,000) on Amazon than any other knot book author. Sherry is a member of the International Guild of Knot Tyers and lives in Bend Oregon with his wife and daughter, where he enjoys fly fishing, hiking, camping and skiing.