Progressive Era Politics Websites
Studying the Progressives
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The Gilder Lehrman Institute of American History offers a number of links to primary sources on the Progressive Era.
Progressive-Era Factories
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The Library of Congress has downloadable videos from inside the Westinghouse companies in 1904.
Conservation in America
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The Library of Congress also offers extensive primary sources in the evolution of the Conservation Movement in the United States.
Life in New York, New York
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"On the Lower East Side" provides digitized transcripts of primary sources that describe life in lower Manhattan, New York, at the turn of the 20th century.