Crevasse on Collier Glacier, Middle Sister, elevation 8000
Evening sun through dense smoke from forest fires, head of Collier Glacier, Middle Sister
Evening sun through dense smoke of forest fires. Crevasse on Collier, Middle Sister about 8000 elevation
Ice Cave. Collier Glacier
Ice cave, Collier Glacier
Ice crevasse on Diller Glacier, east side of Middle Sister
Ice seracs, east side of Middle Sister
Mazama ascent of Middle Sister snow field on Renfrew Glacier
Mazamas climb, circa 1912
Mazamas on Mt. Baker
Mazamas on summit of Middle Sister
Mazamas outing, Mt. Jefferson 1907
Middle Sister, Mazamas outing
Mt. Baker expedition
People at ice caves on north side of Middle Sister
Three people at the head of the Collier Glacier on Middle sister. Elevation about 8000 feet
Three Sisters, Mazamas outing
