This eclectic collection of more than 2,200 items spans the 17th to the 20th centuries. Visitors can search material from nine sections and visit 14 exhibitions. "A Crisis of the Union" presents 224 pamphlets, broadsides, clippings, paintings, and maps on the Civil War. A collection devoted to Theodore Dreiser presents correspondence, various editions of the novel Sister Carrie, an early manuscript for Jennie Gerhardt, and scholarly essays. Approximately 4,000 photographs from singer Marian Anderson's papers are complemented by more than 40 audio and video recordings. A collection on the history of chemistry emphasizes the pre-1850 period with monographs and more than 3,000 images of scientists, laboratories, and scientific apparatus while another exhibit emphasizes the ENIAC computer. Other collections on the birth of the University of Pennsylvania, early sheet music, and Jewish music and history are also available. See also "Cultural Readings: Colonization and Print in the Americas" [ID].

More than 100 published materials on legal aspects of slavery are available on this website. These include 8,700 pages of court decisions and arguments, reports, proceedings, journals, and a letter. Most of the pamphlets and books pertain to American cases in the 19th century. Additional documents address the slave trade, slave codes, the Fugitive Slave Law, and slave insurrections as well as presenting courtroom proceedings from famous trials such as the 18th-century Somerset v. Stewart case in England, the Amistad case, the Denmark Vesey conspiracy trial, and trials of noted abolitionists John Brown and William Lloyd Garrison. A special presentation discusses the slave code in the District of Columbia. Searchable by keyword, subject, author, and title, this site is valuable for studying legal history, African American history, and 19th-century American history.

These Territorial Kansas collections convey the growing divisions in Kansas and the nation over the expansion of slavery, federalism, nationalism, industrialization, and changing political coalitions in Congress. Materials include government documents, diaries, letters, photographs, maps, newspapers, rare secondary sources, historical artifacts, and images of historic sites. The website is divided into five sections: Territorial Politics and Government; Border Warfare; Immigration and Early Settlement; Personalities; and National Debate about Kansas. Each is searchable by keyword, author, and county. Topical sections are subdivided into relevant themes and include an introductory essay. Visitors will find essays on territorial politics, the rights of women and African Americans, military organizations, and free state and pro-slavery organizations. "Personalities" lists 32 individuals, including John Calhoun, and the final section presents both anti-slavery and pro-slavery perspectives of the national debate about Kansas. The site also includes a timeline with links and an annotated bibliography.

These varied collections document the history of Los Angeles and southern California. "Digital Archives" offer more than 126,000 photographs, maps, manuscripts, texts, and sound recordings in addition to exhibits. Nearly 1,200 images of artifacts from early Chinese American settlements in Los Angeles and Santa Barbara are available, as is the entire run of El Clamor Publico, the city's main Spanish-language newspaper from the 1850s. Photographs document Japanese American relocation during World War II and photographs, documents, and oral history audio files record Korean-American history. The archive also includes Works Projects Administration Land Use survey maps and Auto Club materials. A related exhibit, "Los Angeles: Past, Present, and Future", offers collections on additional topics, including discovery and settlement, California missions, electric power, "murders, crimes, and scandals," city neighborhoods, cemeteries, Disneyland, African American gangs, and the Red Car lines.

This annotated collection of more than 30 letters addresses the personal and political costs of war. Letters cover conflicts from the Revolutionary War to the current war in Iraq and are divided thematically into five sections: "Enlisting," "Comforts of Home," "Love," "Combat," and "The End of the War." Letters come from well-known military figures, such as Douglas MacArthur and Robert E. Lee, as well as ordinary veterans, such as Peter Kiterage, one of the 5,000 African Americans who fought in the Revolutionary War. The thematic organization allows users to chart changes and continuities over 200 years of American history. Each letter is read aloud so students can listen as well as read. In addition, a "magic lens" feature provides transcriptions over the original handwriting to help students decode the letters.

This site is devoted to the examination of 19th-century children in America: what they read, what was written about them, and what was written for them. "Children" includes letters, adoption advertisements, paper rewards for obedient children, 24 contemporary articles for and about children, and 14 photographs, as well as scrapbooks and exercise books. "Magazines" features illustrations, articles, editorials, and letters from 12 different children's magazines, with cover and masthead images from 173 different volumes. "Books" includes 22 articles on children and reading (including one warning children to avoid mental gluttony by not reading too much), and the full text of 29 books, including the American Spelling Book and grammar primers. Although the site is not searchable, the documents are indexed and arranged by subject. The site includes eight analytical essays written by modern scholars, a timeline covering the years 1789 to 1873 (with entries covering subjects like magazines, books, historical events, and people), and eight separate bibliographies. A "puzzle drawer" includes word games played by 19th-century children.

These more than 200 documents explore cultural connections between the experiences of African Americans and Irish immigrants in America. Materials relate to individual leaders, historical events, economic, political, and social factors, and cultural achievements. A section entitled "Making Connections" offers 15 questions about historical events and people that represent the intertwined histories of Africans and Irish in America.

Other topics include the end of English participation in the slave trade, the emergence of the nativist Know-Nothing Party in the 1850s, and Ku Klux Klan activities against Catholics and blacks after the Civil War. A section on "Acceptance" explores perceptions of individual and group identities and four timelines focus on displacement, oppression, discrimination, and acceptance in America. "Voices" provides a sample of 13 public statements and interviews on ethnicity and race from ordinary modern Americans. The site also provides a bibliography; an essay by writer James McGowan, a black American with an Irish paternal grandfather; and links to related websites.

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.

These two collections illuminate life on the Great Plains from 1862 to 1912. The nearly 3,500 glass plate negatives depict everyday life in central Nebraska, with images of businesses, farms, people, churches, and fairs in four counties. Approximately 318 letters describe the sojourn of the Uriah Oblinger family through Indiana, Nebraska, Minnesota, Kansas, and Missouri as they traveled to establish a homestead. Letters discuss such topics as land, work, neighbors, crops, religious meetings, grasshoppers, financial troubles, and Nebraska's Easter Blizzard of 1873.

A 1,000-word essay describes the letter collection and the lives of the principal correspondents. Biographical notes are available for more than 120 of the people who corresponded with the Oblingers or who were mentioned in the letters.

More than 12,000 stereoscopic photographs depict life in small towns, villages, rural areas, and cities throughout New York, New Jersey, and Connecticut from 1850 to 1920 on this website. Materials include pictures of buildings, street scenes, natural landscapes, agriculture, industry, transportation, homes, businesses, local celebrations, natural disasters, and people.

Each grouping of photographs offers a short description of the contents as well as notes on the locations, medium, collection names, and digital identification information. The site also features an essay on the history of stereoscopic views and nine related website links. The site is searchable by keyword and can be browsed by subject and image name. These revealing illustrations are valuable for examining rural and urban development as well as everyday life.