The stated purpose of this website is to provide an overview of World War I. This it does effectively through hundreds of essays, 3,100 encyclopedic entries, 618 biographies, 318 resources on the war's major diplomatic and military events, and a timeline. Primary documents include over 100 diaries and firsthand accounts of soldiers and politicians, 3,900 photographs, 651 propaganda posters, and 155 audio files of songs and speeches. Documents include treaties, reports, correspondence, memoirs, speeches, dispatches, and accounts of battles and sieges.

The site also provides 95 essays on literary figures who wrote about the war. While admittedly a work-in-progress, the site offers much material on the leaders who engaged their countries in war and on the experiences of ordinary soldiers who fought the battles.

Emma Goldman (1869–1940) was a major figure in the radical and feminist movements in the United States prior to her deportation in 1919. This collection of primary resources includes selections from four books by Goldman as well as 18 published essays and pamphlets, four speeches, 49 letters, and five newspaper accounts of Goldman's activities.

There are also nearly 40 photographs, illustrations, and facsimiles of documents. Additional items include two biographical exhibitions, selections from a published guide of documentary sources, and four sample documents from the book edition of her papers. A curriculum for students is designed to aid the study of freedom of expression, women's rights, anti-militarism, and social change. The site offers essays on the project's history and bibliographic references as well as links to other websites.

This website provides free access to a variety of visual materials and "seeks to illustrate the unique role of visual images in American history." Clio is an educational organization developing American history projects with appeal to a wide audience, including students, educators, and researchers. This site aims to not only provide access to a variety of visual historical materials, such as photographs, illustrations, and material objects (namely quilts), but also "to promote visual literacy by exploring the variety of ways that images enhance our understanding of the past and challenge us to hone our interpretive skills."

The website is organized into three main sections. The first, "Visualizing America," includes two collections of modules, titled "Picturing the Past: Illustrated Histories and the American Imagination, 1840–1900," and "Quilts as Visual History." A second section, ”Photography Exhibits," includes three photography collections: one focusing on the work of Frances Benjamin Johnston, another on the work of the Allen Sisters (Mary and Frances Allen), and the Peter Palmquist Gallery. A third section, "Creating History," examines the figure of Lowell Thomas, who became one of America's best known journalists, as well as the media version and reality of Lawrence of Arabia.

An additional section concerning women's history and lives in the 21st century and second half of the 20th century is planned for 2013.

A valuable website to students and researchers alike, it suffers only slightly from a lack of search capabilities.

The 190 works presented on this site—approximately 40,000 written pages and more than 3,000 illustrations—provide eyewitness accounts covering California history from the Gold Rush through the end of the 19th century. Most authors represented are white, educated, male Americans, including reporters detailing Gold Rush incidents and visitors from the 1880s attracted to a highly-publicized romantic vision of California life.

The narratives, in the form of diaries, descriptions, guidebooks, and subsequent reminiscences, portray encounters with those living in California as well as the impact of mining, ranching, and agriculture. Additional topics include urban development, the growth of cities, and California's unique place in American culture. A special presentation recounts early California history, and a discussion of the collection's strengths and weaknesses provides useful context for the first-person accounts.

This collection of commercially produced Mexican American vernacular music is the largest of its kind, with more than 100,000 recordings. The music, originally published between 1905 and the 1990s, is primarily in Spanish. This website presents digitized versions of roughly 30,000 recordings. The music ranges widely in style and includes lyric songs, canciones, boleros, rancheras, sones, instrumental music, and the first recordings of norte and conjunto music, as well as politically motivated speeches and comedy skits.

A browseable list of subjects shows that love (unrequited love, adultery, regrets), war (Korean War, Mexican Revolution, World War I and II), and praise (of country, guitar, mother) are common themes in the collection. Unfortunately, the songs are available to the general public only in 50-second sound clips. Users interested in gaining full access to a select group of songs for research are encouraged to contact the website's administrators.