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The Evolution of the Conservation Movement, 1850-1920

Subjects

Mammoth plates--1860.
Mammoth plates--1860-1870
Mammoth plates--1860-1880
Man--Influence on nature.
Marine resources conservation
Marsh, George Perkins,--1801-1882.
Mather, Stephen Tyng,--1867-1930.
McGee, W. J.--1853-1912.
Meditation--New York (State)--Slabsides--1900-1910.
Merriam, C. Hart--(Clinton Hart),--1855-1942.
Mesas--1870-1880.
Mexico, Gulf of.
Mines and mineral resources--California
Mines and mineral resources--United States--Periodicals.
Moonlight--1860-1870.
Moosehead Lake (Me.)--1840-1880.
Moosehead Lake (Me.)--1880-1890.
Moosehead Lake (Me.)--1880-1900.
Moran, Thomas,--1837-1926.
Morton, J. Sterling--(Julius Sterling),--1832-1902.
Mountaineering.
Mountains.
Mountains--1840-1880.
Mountains--1860-1870.
Mountains--1870-1880.
Mountains--California--1860.
Mountains--California--1860-1870.
Mountains--California--1870-1880.
Mountains--California--Yosemite National Park--1860.
Mountains--California--Yosemite Valley--1870-1880.
Mountains--Colorado--1870-1880.
Mountains--Wyoming--Wind River Range--1870-1880.
Mountains--Yellowstone National Park--1870-1880
Muir, John,--1838-1914.
Muir, John,--1838-1914,--Journeys--California--Yosemite Valley.
National monuments
National parks and reserves
National parks and reserves--United States.
National parks and reserves--United States--Bibliography.
National parks and reserves--United States--Congresses.
Natural history
Natural history--Illinois River.
Natural history--Outdoor books.
Natural resources.
Natural resources--Congresses.
Natural resources--United States--Congresses.
Nature.
New York (State)--Politics and government--Periodicals.
Newell, Frederick Haynes,--1862-1932.
Newlands, Francis G.--(Francis Griffith),--1848-1917.
Newsreel
Niagara Falls.
Niagara Falls (N.Y. and Ont.)--1860-1870.
Niagara Falls--Description.
Niagara falls.
Olmsted, Frederick Law,--1822-1903.
Ornithology--Periodicals.
Outdoor cookery--Maine--1880-1900.
Pacific coast Indians, Wars with,--1847-1865.
Packtrains--Wyoming--1870-1880.
Paintings, American.
Paintings--1860-1870--Reproductions--1860-1870.
Paintings--Reproductions--1870-1880.
Parks--California
Parks--Minnesota
Periodical illustrations--1870.
Periodical illustrations--1890-1900.
Photographic prints--1850-1870.
Photographic prints--1860.
Photographic prints--1860-1870
Photographic prints--1860-1880
Photographic prints--1870-1880.
Photographic prints--1880-1890.
Photographic prints--1880-1900.
Photographic prints--1890.
Photographic prints--1890-1900.
Photographic prints--1890-1920.
Photographic prints--1900.
Photographic prints--1900-1910.
Photographic prints--1910-1920.
Photographic prints--1910-1930.
Photographic prints--1920.
Photographic prints--1920-1930.
Photographic prints--1930.
Photographic prints--1960-1980.
Photography--Wyoming--1870-1880.
Photogravures--1880-1910.
Photogravures--1890-1900.
Photoprints--1860.
Photoprints--1870-1880.
Photoprints--1890-1900.
Photoprints--1900-1910.
Photoprints--1910.
Picnics--Maine--1880-1890.
Picnics--Maine--1880-1900.
Picnics--Pennsylvania--1860-1870.
Picnics--Pennsylvania--Delaware Water Gap--1870-1880.
Pinchot, Gifford,--1865-1946.
Pines--California--1860-1880
Plant succession.

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