An engaging exhibit geared especially to schoolchildren, this site provides images, texts, and activities to explore the history and operation of the American presidency. Organized into four sections, the exhibit displays more than 375 images of documents, paintings, photographs, buttons, posters, paraphernalia, and objects along with short texts (50–200 words in length) explaining their significance. The Foundations pertains to the prehistory of the presidency, how the Framers defined responsibilities of the office, and the basic work that the office requires. The Campaign Trail covers the election process. Life and Death in the White House looks at the domestic world of the president, life after leaving office, and assassinations. Communicating the Presidency deals with the press, the entertainment industry, and advertising.

Most impressive are the many suggested activities, lesson plans, and games designed for children of varying ages. A Teacher's Manual contains five lesson plans each for grades 4–6, 7–9, and 10–12. In addition, there are activities for younger children, including analyzing letters between children and five presidents and creating a new official seal. Provides a timeline, bibliography of 88 titles arranged according to age group and exhibit section, and annotated list of 46 links to other sites. Very useful for classroom history and civics courses.

Presents more than 200 items—including 51 articles, 28 lectures, 84 letters, and 35 photographs—by and about the Nobel-winning geneticist Barbara McClintock (1902–1992). Through experiments with maize in the 1920s and 1930s, McClintock discovered that genetic changes occur when chromosomes break and recombine, a process called "crossing over." In the 1950s, upon finding that genes "jump" around, she investigated the effects of transposable genetic elements.

The site includes an exhibit divided into seven chronological sections with a 4,000-word essay presenting McClintock's career highlights, accompanied by links to relevant documents and visuals. Materials in the collection can be retrieved through searches—basic and also geared to scientists—and in chronological and alphabetical listings. Valuable for serious students of genetics as well as those studying the history of American science and professional women.

Offers approximately 50,000 images of 6,500 items from the papers of 19th-century American scientist and painter Samuel F. B. Morse (1791–1872), inventor of the electromagnetic telegraph. In addition to science and art-related papers, the materials in the collection document Morse's interest in photography and religion, as well as his involvement with the American nativist movement. Includes correspondence, diaries, notebooks, scrapbooks, newspaper clippings, books, pamphlets, broadsides, maps, drawings, and other materials, primarily produced during between 1807 and 1872.

The site provides a timeline supplemented with 15 documents; a family tree; two essays of approximately 1,000 words each (entitled "The Invention of the Telegraph" and "The Lesser-Known Morse: Artist, Politician, Photographer"); a bibliography of 22 titles; and links to 16 additional sites.

Searching capabilities leave much to be desired. Keyword searching applies only to titles assigned to documents by the Library of Congress. Thus even though the finding aid lists "Nativism" as a subject, a keyword search turns up nothing. The site unfortunately is of limited use because of this shortcoming.

This collection of more than 160 texts, maps, photographs, and sketches is focused on the people, themes, and organizations important to Reston's history as a planned community. Textual materials include deeds, certificates, promotional brochures, studies, reports, and correspondence. Maps include Reston's Master Plan, major road systems, educational facilities, and recreational areas. Photographs include Lake Anne, various physical structures, and people significant to Reston's history. Sketches are mostly of building and community plans. Subject areas include health care, education, public services, parks, recreation, transportation, and population.

The collection can be browsed by title, subject, people, or organization and it can also be searched by subject, personal name, corporate name, or title. This is a website of interest to those researching the history of Reston or of planned communities.

This exhibition commemorates the 50th anniversary of the pivotal 1954 Brown v. Board of Education of Topeka, Kansas case. It offers 116 images, including book covers, letters, political cartoons, and photographs. Exhibition Overview is a 300-word introduction to the exhibit and its significance.

The website is divided into three sections: A Century of Racial Segregation, Brown v. Board of Education, and The Aftermath, all of which consist of links to documents, detailed paragraphs on selected documents, and events related to that section. "Discover" buttons are dispersed throughout these exhibit sections; and, when clicked, reveal more information and answer a particular question, such as "What is 'separate but equal?'"

The Exhibition Checklist includes links to all images used on the site. The site is an ideal resource for students interested in the historical developments that led to the Brown v. Board decision.

Designed as a companion to the PBS film, this site documents the development of the birth control pill and its effect on women's health. The site offers a synopsis of the film (approximately 1,000 words) and about a dozen primary sources, including letters between birth control pill researchers. The site also includes a timeline that documents references to birth control as far back in history as Biblical Genesis.

A Gallery showcases approximately 15 birth control pill package designs. People and Events introduces visitors to the researchers (including Margaret Sanger) who dedicated years to the project, as well as milestones in the pill's development. Special Features uses a Flash presentation to demonstrate how the pill works to prevent pregnancy, explores the many shifts in sexual attitudes that have been attributed to the pill, and asks viewers to participate in an online poll.

A Teacher's Guide features lesson plans in geography, civics, history, and society, and presents challenging exercises for students. For example, one exercise asks students to survey the effect geography had on sexual attitudes by comparing laws about contraception from state to state in 1960.

Although the site is not a comprehensive archive, the primary sources and multimedia exhibits make it valuable, especially for research into birth control and women's issues.

This site offers textual and visual historical resources for teaching, learning, and researching the history of women working in the United States. It currently includes almost 3,500 digitized books, 7,500 manuscript pages, and 1,200 photographs. Holdings include letters, diaries, scrapbooks, magazines, catalogs, photographs, books, and pamphlets (both non-fiction and fiction).

Visitors may browse through the "New Additions" area, look through materials by topic (such as home labor, arts, or business), search catalog keywords, or perform a full text search.

Designed to explore the historical similarities and contrasts, ethnic diversity, and interactions between Brazil and the United States, this site contains almost 1,000 images from the rare book, manuscript, map, print, and photographic collections of the Library of Congress and the National Library of Brazil.

The site includes letters (including letters from Thomas Jefferson concerning the independence of Brazil), illustrations, 18th-century maps, and other textual items, including poetry.

The sources are available in five categories: "Historical Foundations," "Ethnic Diversity," "Culture and Literature," "Mutual Impressions," and "Biodiversity" (right now, only the Historical Foundations section is completed). The site is viewable in both English and Portuguese, and is appropriate for high school and college students, as well as teachers and researchers.

This site presents nearly 1 million pages of Vietnam War-related research materials. It includes the full text of more than 80,000 documents, 60,000 photos and slides, hundreds of interviews with veterans and other participants, streaming audio and video recordings, and much more. The more than 685,000 pages of documents include official government and military records, unit and operation action reports, unit rosters, staff journals and morning reports, personal letters, and diaries. The collection grows by some 20,000 pages of new material each month.

Visitors may find useful the Acronym Database (to help with those mysterious and persistent military acronyms). The search engine has been recently updated, and no longer supports simple searches; all searches are advanced. The archive limits the number of users at any one time, due to licensing issues, so the site may be unavailable during times of heavy use.

Convenient, powerful, and massive, this site is invaluable for research into Vietnam units, individuals, and operations.

This site introduces Emma Goldman—an immigrant, an advocate of free love, a promoter of birth control, and an anarchist. The designers have done a splendid job in tying the many facets of Goldman's public life together into one set of interrelated narratives. An "Introduction" is divided into 13 thematically coherent sections, such as Early Years, Anarchism, Use of Violence, and Deportation. Each runs approximately 500 words. A Timeline is useful for placing Goldman into historical and cultural context.

There are several dozen artifacts, including the full text of two books, six cartoons, four historical documents, an analytical essay, two personal letters, 12 news clippings, and 16 photographs. The information is well documented, and includes a detailed bibliography.

The care that the producers took in explaining potentially confusing or problematic terms (like feminism and suffrage) makes the site particularly appropriate for high school and undergraduate students. Although not a comprehensive archive, this site nonetheless provides an informative introduction to Goldman and her role in American history.