Banff Mount Assiniboine, Gem Trek MapsFor their detail, accuracy, and unique waterproof characteristics, I’ve been a long-time fan of Gem Trek Maps. Through Summerthought Publishing, we’ve kept in contact with the company founders, Donna and Roger Nelson, for many years – and at one point we said “call us when you’re ready to retire. That call came last year, and as of 1 May 2018 we are the proud owners of a mapping company. Much of the appeal for Dianne and myself came from the thousands of hours the Nelsons have devoted to the company – creating award-winning maps that are renowned and recognized by outdoor enthusiasts throughout the region and beyond.