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1/4 Scale Detail of Stair at End of Wing, Old Faithful Inn, Yellowstone National Park, 1927
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1/4 Scale Plan of Porch and Main Stairs, Old Faithful Inn, Yellowstone National Park, 1927
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12 Inch Butterfly Valve with 9 Inch Relief Outlet, D'Olier Engineering Company
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12 Inch Butterfly Valve with 9 Inch Relief Outlet, D'Olier Engineering Company
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12 Inch Butterfly Valve, D'Olier Engineering Company
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Addition to Dining Room, Old Faithful Inn, Yellowstone National Park, 1927
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Addition to Kitchen, Old Faithful Inn, Yellowstone Park Hotel Company, 1929
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Addition to Old Faithful Inn, Sheet 2 [of 8], Yellowstone National Park, 1927
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Addition to Old Faithful Inn, Sheet 3 [of 8], Yellowstone National Park, 1927
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Addition to Old Faithful Inn, Sheet 4 [of 8], Yellowstone National Park, 1927
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Addition to Old Faithful Inn, Sheet 5 [of 8], Yellowstone National Park, 1927
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Addition to Old Faithful Inn, Sheet 7 [of 8], Yellowstone National Park, 1927
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Addition to Old Faithful Inn, Sheet 8 [of 8], Yellowstone National Park, 1927
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Addition to Old Faithful Inn, Yellowstone National Park., circa 1927
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Addition to Old Faithful Inn, for Yellowstone Park Hotel Company, Yellowstone Park Wyoming, circa 1927
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Administrative Map of Yellowstone National Park, Wyoming-Montana-Idaho
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Administrative Map of Yellowstone National Park, Wyoming-Montana-Idaho, Estimates for Handling Automobile Traffic
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Alteration Lobby Old Faithful Inn, Yellowstone Park, Wyoming, 1927
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Alterations Old Faithful Inn, Yellowstone Park Wyoming, Yellowstone Park Hotel Company, 1927
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Animal Habitat Management Plan, 1966
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Balcony, Old Faithful Lodge Center, Old Faithful Camp, Yellowstone National Park, 1927
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Bighorn Sheep, Pronghorn, and Pronghorn Habitat Management Plan, circa 1963
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Bison Census and Distribution, 1944
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Bison Herd Areas & Routes, 1968
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C.A. Hamilton's Store Building, Old Faithful Tourist Camp, Sheet 1 of 3, 1929
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C.A. Hamilton's Store Building, Old Faithful Tourist Camp, Sheet 2 of 3, 1929
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C.A. Hamilton's Store Building, Old Faithful Tourist Camp, Sheet 3 of 3, 1929
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Central Building , Old Faithful Camp, Yellowstone Park Camp Company, 1923
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Central Building at Old Faithful, Yellowstone Park Camps, circa 1923
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Characteristic Curve of Francis Weir 8ft Wide, D'Olier Engineering Company
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Comfort Station, Old Faithful, Yellowstone Park Camp Company, Sheet 1 [of 3], 1928
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Comfort Station, Old Faithful, Yellowstone Park Camp Company, Sheet 2 [of 3], 1928
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Comfort Station, Old Faithful, Yellowstone Park Camps Company, Sheet 3 [of 3], 1928
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Curio Shop, Old Faithful Lodge, Yellowstone National Park, circa 1927
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D'Olier Engineering Co. Pipe Specials
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Data of Elk Drift, 1918
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Detail of 21 1/2 Diameter Turbine Wheel for D'Olier Francis Turbine
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Detail of Bearing Bushing, and Detail of Oil Cap, D'Olier Engineering Company
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Detail of Bearing Stand, D'Olier Engineering Company
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Detail of Bed Plate for D'Olier Francis Turbine, D'Olier Engineering Company
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Detail of Case Head for D'Olier Francis Turbine, D'Olier Engineering Company
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Detail of Case for D'Olier Francis Turbine
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Detail of Double Bearing Bracket for D'Olier Francis Turbine, D'Olier Engineering Company
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Detail of Draft Tube Ring, D'Olier Engineering Company
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Detail of Gate Shaft, D'Olier Engineering Company
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Detail of Guide Vanes for D'Olier Francis Turbine
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Detail of Oil Ring, D'Olier Engineering Company
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Detail of Pedestal Bearing, D'Olier Engineering Company
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