About John Martin John Martin, a Calgary native, is an environmental consultant and the author of 13 climbing guides. He has been climbing in the Rockies since 1963 and developing sport routes there since 1983. John lives in Calgary, Alberta. Books by John Martin Sport Climbs in the Canadian Rockies by (author) John Martin & Jon Jones Sport Climbs in the Canadian Rockies – 7th Edition by (author) John Martin & Jon Jones Sport Climbs in the Canadian Rockies - 6th Edition by (author) John Martin & Jon Jones
