| From | Adirondack Mountains (N.Y.)--1840-1880 | to | Geysers--Wyoming--1870-1880
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| From | Glass negatives--1850-1870 | to | Magoon, Elias Lyman
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| From | Mammoth plates--1860 | to | Plant succession
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| From | Pollution--Law and legislation | to | Tents--Maine--Lobster Lake--1880-1890
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| From | Tents--Wyoming--1870-1880 | to | Yosemite national park, California
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