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The Evolution of the Conservation Movement, 1850-1920

Subjects

Pollution--Law and legislation
Portrait drawings--1920-1930--Reproductions--1930.
Portrait photographs--1850-1870.
Portrait photographs--1870-1880.
Portrait photographs--1880-1890.
Portrait photographs--1880-1900.
Portrait photographs--1890.
Portrait photographs--1890-1900.
Portrait photographs--1890-1920.
Portrait photographs--1900.
Portrait photographs--1900-1910.
Portrait photographs--1910.
Portrait photographs--1910-1920.
Portrait photographs--1910-1930.
Portrait photographs--1920.
Portrait photographs--1920-1930.
Portrait prints--1880-1890--Reproductions--1960-1980.
Portraits--1810-1910.
Portraits--1880-1910.
Portraits--1890-1900.
Portraits--1900-1920.
Potomac River--1860-1870.
Powell, John Wesley,--1834-1902.
Presidential proclamation
Private manuscript
Public lands--United States.
Railroad bridges--1860-1870.
Railroad bridges--1870-1880.
Rain and rainfall--West, The.
Rainbows--Yellowstone National Park--1870-1880.
Reading--1910.
Reclamation of land--Arizona.
Recreation
Recreation--1840-1880.
Recreation--Maine--1880-1900.
Recreation--Pennsylvania--Delaware Water Gap--1870-1880.
Reflections--1860.
Reflections--1860-1870
Reservoirs--Arizona.
Riverine conservation
Rivers--1840-1880.
Rivers--1870-1880.
Rivers--New York (State)--1840-1880.
Rivers--Pennsylvania--1860-1870.
Rivers--Rocky Mountains--1870-1880.
Rivers--West Virginia--Harpers Ferry--1870-1880.
Rivers--Wyoming--1870-1880.
Rivers--Wyoming--Wind River Range--1870-1880.
Rivers--Yellowstone National Park--1870-1880.
Rock formations--California--1860.
Rock formations--Rocky Mountains--1870-1880.
Rock formations--Wyoming--1870-1880.
Rock formations--Yellowstone National Park--1870-1880.
Rocks--Yellowstone National Park--1870-1880.
Rocky Mountains--1860-1870.
Rocky Mountains--1870-1880.
Roosevelt, Theodore,--1858-1919.
Roosevelt, Theodore,--1858-1919--Journey to Louisiana.
Roosevelt, Theodore,--1858-1919--Journeys--California--Yosemite Valley.
Rowboats--Wyoming--1870-1880.
Royal Tern (Ship)
Salt River (Ariz.)
Salt River Valley (Ariz.)
San Francisco--Water-supply.
Sanitation.
Schurz, Carl,--1829-1906.
Scientific expeditions--Alaska
Sentinel Dome (Calif.)--1860.
Seton, Ernest Thompson,--1860-1946.
Shaffer, Newton M.--(Newton Melman),--b. 1846.
Sharp, Dallas L.--(Dallas Lore),--1870-1929.
Shasta, Mount (Calif. : Mountain)--1870-1880.
Sierra Nevada (Calif. and Nev.)
Sierra Nevada Mountains.
Sierra Nevada Mountains, Cal.
Sierra Nevada mountains.
Siksika Indians--Clothing & dress--1910-1920.
Sleeping--1880-1890.
Smoke prevention.
Snake River (Wyo.-Wash.)--1870-1880.
Soda Springs (Idaho)--1870-1880.
Speeches, addresses, etc., American.
Springs--Wyoming--1870-1880.
Springs--Yellowstone National Park--1870-1880.
Squam Lakes (N.H.)--1860-1870.
State (non-Federal) conservation efforts
State governments--Congresses.
State rights.
Stereographs--1900-1910.
Stream conservation
Streams--1870.
Streams--1870-1880.
Streams--California--1860.
Streams--California--1860-1870
Streams--California--Yosemite Valley--1860.
Sunrises & sunsets--1860-1870.
Susquehanna River--1870-1880.
Tents--1870-1880.
Tents--Maine--1880-1890.
Tents--Maine--Lobster Lake--1880-1890.

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