These more than 350 recently declassified documents from archives of former Warsaw Pact countries and the U.S. reveal previously hidden aspects of Cold War military strategy. The project offers documents and accompanying analyses in six categories: Warsaw Pact records; Warsaw Pact war plans; NATO records (U.S. and British); national perspectives (Bulgaria, Romania, Hungary, China, and Poland); crises (Berlin and Libya); and intelligence.

The website also provides 13 oral history interviews with former officials, including two Eisenhower administration officers involved with NATO planning and nuclear weapons policies. Documents reveal a 1964 Warsaw Pact war plan for using nuclear weapons in a preemptive strike against NATO forces and a 1965 Hungarian Army exercise detailing the targeted destruction of Western cities, including Vienna, Munich, Verona, and Vicenza. A 30-page survey article assesses the new history written since the release of recent documents.

More than 55,000 photographs taken by staff photographers of the Chicago Daily News during the first decades of the 20th century are available on this website. Roughly 20 percent of the photos were published in the paper. The Chicago Daily News was an afternoon paper, sold at a cost of one cent for many years, with stories that tried to appeal to the city's large working-class audience.

The website provides subject access to the photographs, which include street scenes, buildings, prominent people, labor violence, political campaigns and conventions, criminals, ethnic groups, workers, children, actors, and disasters. Many photographs of athletes and political leaders are also featured. While most of the images were taken in Chicago and nearby areas, some were taken elsewhere, including at presidential inaugurations. The images provide a glimpse into varied aspects of urban life and document the use of photography by the press during early 20th century.

This exhibit collects a series of chronologies, images, maps, bibliographies, biographies, essays, and other materials for studying the Spanish-American War. An overview essay discusses the historical context, including events leading up to the war and well-known individuals such as Jose Martí and Theodore Roosevelt.

There are four main sections: Cuba, the Philippines, Puerto Rico, and Spain. Each section presents an introductory essay, a chronology, and guides to related resources. An index offers short descriptive entries on 57 people, 13 places in Puerto Rico, Cuba, and the Philippines, and 21 events. Also available are a chronology and a selected bibliography of personal narratives, illustration sources, manuscripts, and maps. Finally, there is a list of additional Library of Congress resources and relevant American Memory presentations.

These 8,000 items document the immigrant experience of Chinese who settled in California during the 19th and early 20th centuries. Materials include photographs, letters, diaries, speeches, business records, legal documents, pamphlets, sheet music, cartoons, and artwork.

Access is provided through nine galleries, each containing an introductory essay and 70 to 575 items. Four galleries present materials on San Francisco's Chinatown, including architectural space, business and politics, community life, and appeal to outsiders. Additional galleries deal with Chinese involvement in U.S. expansion westward; communities outside San Francisco; agricultural, fishing and related industries; the anti-Chinese movement and Chinese exclusion; and sentiments concerning the Chinese. Visitors may search by keyword, name, subject, title, group, and theme. The site will be useful for studying ethnic history, labor history, and the history of the West as well as Chinese-American history.

For those studying the history of the Olympics, sports history, and the history of leisure and recreation, this website provides more than 45,000 documents (in .pdf format) pertaining to official Olympics history as well as other sports. Complete or partial runs of 10 journals have been digitized, including Journal of Sports History (3,030 articles from 1974–2003), Olympic Review (1901–2003), Baseball Magazine (1909–1918), American Golfer (1908–1911), Golf Illustrated and Outdoor Man (1914–1915), and Outing (1883–1899).

The site also furnishes 58 oral histories of Southern California Olympic athletes and 83 official Olympic Reports from 1896 to 2004. The full text of This Great Symbol: Pierre de Coubertin and the Origins of the Modern Olympic Games by John MacAloon and some recent studies of aspects of sports history are also available. Additions to the site are made regularly.

This well-organized website offers more than 900 items related to Hull House—including newspaper, magazine, and journal articles, letters, memoirs, reports, maps, and photographs. Materials are embedded within a clear historical narrative that illuminates the life of Jane Addams in addition to the history and legacy of Chicago's Hull House.

Users can search the site or focus on any of the 100 topics arranged in 12 chapters that begin with settlement life in Chicago in the 1880s and end with the movement after Addams's death. Topics include the reform climate in Chicago; activism within the movement; the immigrant experience of race, citizenship, and community; education within the settlement house; and cultural and leisure activities at Hull House and in Chicago. The site provides a timeline, featuring a pictorial biography of Addams; a geographical section that includes maps of Chicago; and an image section, with 12 photograph sections and essays.

James Allen has assembled a collection of chilling photographs of lynchings throughout America, primarily from the late 19th and early 20th centuries. Many were circulated as souvenir postcards. The site is a companion to Allen's book Without Sanctuary. The exhibit can be experienced through a flash movie with narrative comments by Allen or as a gallery of more than 80 photographs with brief captions. Most images also have links to more extensive descriptions of the circumstances behind each specific act of violence.

While the vast majority of lynching victims were African Americans, white victims are also depicted. Individually and as a group, these images are disturbing and difficult to fathom. They provide, however, an excellent resource for approaching the virulence and impact of racism in late 19th and 20th-century America.

Covering more than 200 jazz bands and musicians active from 1895 to 1929, this website offers biographical information, photographs, and audio and video files. It includes more than 200 sound files of jazz recordings by well-known artists, such as Louis Armstrong, Sidney Bechet, and Django Reinhardt, as well as many by dozens of lesser-known musicians.

The files are annotated with biographical essays of varying length, discographies, and bibliographic listings. Listings are available for 20 short jazz films made in the late 1920s and early 1930s as well as two video files. Twenty essays and articles about jazz before 1930 come from published liner notes, books, journals, or jazz fans.

A vast database of Thomas Edison's papers, this website includes 71,000 pages of correspondence, 12,000 pages of technical drawings, and more than 13,000 clippings about the inventor from 103 journals and newspapers. The site boasts over five million pages of documents related to Edison. Processes for searching the site are complicated, but an extensive guide offers search strategies.

Materials include 2,210 facsimiles of Edison patents from 1868 to 1931 for products such as the electric lamp and the phonograph. A collection of 14 photographs, maps, and prints depict Edison, his environs, and his inventions. The site offers a "Document Sampler" of 23 selections of general interest as well as an 8,000-word essay on Edison's companies, 22 pages about Edison and the development of the motion picture industry, and two chronologies. A bibliography directs visitors to more than 70 books and articles and 21 related websites.

Based on Mark Twain's works and life, this engaging website focuses on the author's life and career, including the creation of his popular image, the marketing and promotion of his texts, and live performances. Five sections center on major works, including Innocents Abroad, Tom Sawyer, and Pudd'nhead Wilson. Each section is placed within a historical context.

The website offers an extensive collection of text sources, including 50 published texts or lectures, 16 letters, and over 100 texts and excerpts from other late 19th-century authors. Twenty-nine items from publishers, more than 80 newspaper and magazine articles, 35 obituary notices, over 100 period literary reviews, and hundreds of illustrations and photographs round out this informative site. An interactive graphic essay explores the issue of racism through various American illustrations of "Jim" in Huckleberry Finn. This is an invaluable resource for studying American literature and its place within the 19th-century marketplace and landscape.