Frosted Bison, Yellowstone National ParkBison on a Misty Morning in Yellowstone National ParkYellowstone Bison next to the Madison RiverYellowstone's Madison Pack of Wolves amongst a herd of bison during a snowstorm, winter 2010.Bison grazing in Yellowstone National Park, Winter 2010Bison, Yellowstone National Park Winter 2010I recently finished a class on Photoshop... our assignment was to make a CD cover using our own photographs.  This is what I came up with.