 Kjellström also organized Silva Orienteering Services of La Porte Indiana to provide training and company sponsorship for the sport of orienteering in North America.In 1955, Kjellström published a hugely popular book on outdoor land navigation and the sport of orienteering, "Be Expert With Map and Compass".To date, "Be Expert With Map and Compass" has sold more than 500,000 copies in English and has been translated into several languages, and has remained continuously in print since its first publication.