These published works, manuscripts, images, and motion picture footage address the formation of the movement to conserve and protect America's natural heritage. Materials include 62 books and pamphlets, 140 Federal statutes and Congressional resolutions, 34 additional legislative documents, and excerpts from the Congressional Globe and the Congressional Record. An additional 360 presidential proclamations, 170 prints and photographs, two historic manuscripts, and two motion pictures are available.

Materials include Alfred Bierstadt paintings, period travel literature, a photographic record of Yosemite, and Congressional acts regarding conservation and the establishment of national parks. An annotated chronology discusses events in the development of the conservation movement with links to pertinent documents and images.

By the time Thomas Jefferson became the third President of the United States in 1801, interest in exploring the West had begun to shape U.S. policy. This chronological narrative traces Jefferson's life, participation in politics, and accumulation of scientific geographical knowledge from 1735 to 1804. There are four main sections: "The Jeffersons and Their Frontier Virginia Neighborhood," "From Colony to Commonwealth," "Science and Statecraft at Home and Abroad," and "Public Servant to the Early Republic."

This narrative is accompanied by an archive of 169 letters, statues, books, treaties, maps, and journals providing primary source insight into Jefferson's thoughts about the West and the Lewis and Clark expedition in particular. Three interactive maps from the 1700s, overlaid with historical data about cities, private dwellings, natural features, courthouses, and waterways, provide important insight into the geographic and social environment at the time.

This large collection of maps from the 16th century to the present day focuses on Americana and cartographic treasures.

Materials are organized into seven thematic categories—Cities and Towns, Conservation and Environment, Discovery and Exploration, Cultural Landscapes, Military Battles and Campaigns, Transportation and Communication, and General Maps. Sections include five special presentations.

Users may download maps or zoom in to view details. Seventeen specific map collections contained within this larger site that are of particular importance for the study of American history include "Discovery and Exploration," "The American Revolution and Its Era," "Railroad Maps, 1828–1900," "American Colonization Society Collection: Maps of Liberia, 1830–1870," "Panoramic Maps, 1847–1929," "Civil War Maps," and "Mapping the National Parks."

Due to copyright restrictions, only a small portion of the more than 25,000 digitized items from the Hannah Arendt papers can be viewed outside of three locations. Visitors who are not at the Library of Congress, New School University in New York City, or Carl von Ossietzky University in Oldenburg, Germany, may, however, view almost all of the collection's documents relating to the Adolph Eichmann trial and Arendt's book, Eichmann in Jerusalem. Material in this collection includes correspondence with holocaust survivors, minutes of the trial, Arendt's notes, and positive and negative reviews of the book. About one quarter of Arendt's general correspondence from 1938 to 1975, arranged alphabetically by correspondent, is available. Visitors may access eight folders of notes, lectures, fiction, and poetry from the 1920s and 1940s and all of Arendt's appointment books from 1972 to 1975. All material is in facsimile, much of it in German. Most of a collection of lecture notes, correspondence with students, and royalty statements for Arendt's books from 1949 to 1975 is available offline. Nearly half of a collection of drafts of Arendt's books, On Revolution and Between Past and Future may also be accessed from any location. Although limited, the site will be interesting for research on Arendt, modern Europe, and philosophy.

This exhibit explores the contributions of Jewish women in Feminism's "Second Wave" during which Jewish women helped work "to transform American society and Jewish life in America." It offers a collection of images, a timeline, and six thematic essays. The interactive timeline using the exhibit images allows the visitor to follow the role of Jewish women in the resurgence of the feminist movement from the 1960s through the end of the 20th century. The thematic essays—"Foremothers," "From Silence to Voice," "Setting the Feminist Agenda," "The Personal is Political," "Feminism is Judaism," and "Confronting Power"—combine images, audio clips, and statements from prominent Jewish feminists, as well as short biographies of the feminists. The visitor can search the entire collection of more than 90 objects and stories from Jewish feminists used in the essays or browse the collection by person, format, topic, or date. A useful resource for researching Jewish women or the history of the feminist movement.