Robertston, Heather.MEASURING MOTHER EARTH: HOW JOE THE KID BECAME TYRRELL OF THE NORTH. Toronto McClelland & Stewart 2007 0771075391 / 9780771075391 First Edition Hard Cover Very Good+ Very Good+ 348 pp, large 8vo (9 1/4" H). B&w photographs, maps. "One of Canada's first scientific explorers, Joseph Burr Tyrrell began his career in the late nineteenth century by surveying the Rocky Mountains on foot and mapping remote northern regions from a birchbark canoe; he ended it at the dawn of the Atomic Age, flying across the wilderness in bush planes. Among his many accomplishments, Tyrrell discovered Canada's first dinosaur, Albertosaurus, and an Ice Age glacier he named Keewatin. He risked his own and his companions' lives charting the Dubawnt and Kazan river networks west of Hudson Bay, and rescued the maps and records of Canada's great geographer, David Thompson, from oblivion. After he failed to find gold in the Klondike, Tyrrell gambled on buying a gold mine in Kirkland Lake, Ontario, and won millions." Light wrinkling at top/bottom of spine. Dust jacket has very light edge wrinkling - mainly at top/bottom of spine and flap-folds, very minor edge wear.