found: Work cat.: Witczuk, J.J. Monitoring program and assessment of coyote predation for Olympic marmots, 2007:abstr. (The Olympic marmot (Marmota olympus) is an endemic species to the Olympic Peninsula, Washington State)
found: ITIS, Feb. 11, 2008(Marmota olympus (Merriam, 1898) -- valid -- Olympic marmot)
found: NatureServe explorer, via WWW, Feb. 11, 2008(Marmota olympus, Olympic Marmot)
found: Mammal species of the world, 3rd ed., via WWW, Feb. 11, 2008(Marmota (Petromarmota) olympus. Common name: Olympic Marmot)
found: North American mammals, via Smithsonian National Museum of Natural History WWW site, Feb. 11, 2008(Marmota olympus (Olympic Marmot); found only on the Olympic Peninsula of Washington State)
