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 and many search and rescue organizations. He is president of Pro-Knot, a company that publishes waterproof plastic knot cards for fishermen, boaters, campers and anyone that finds themselves with a rope in hand, and has sold over one million of the popular knot card sets. 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 maintaining the internet's most popular knot tying website, netknots.com.