For Us the Living is a resource for teachers that engages high school students through online primary-source based learning modules. Produced for the National Cemetery Administration's Veterans Legacy Program, this site tells stories of men and women buried in Alexandria National Cemetery, and helps students connect these stories to larger themes in American history. Primary sources used include photographs, maps, legislation, diaries, letters, and video interviews with scholars.

The site offers five modules for teachers to choose from, the first of which serves as an introduction to the cemetery's history. The other four cover topics such as: African American soldiers and a Civil War era protest for equal rights, the manhunt for John Wilkes Booth after Lincoln’s assassination, commemoration of Confederates during Reconstruction, and recognition of women for their military service. Most of the modules focus on the cemetery’s early history (founded in 1862) although two modules reach into the post-war era. Each module is presented as a mystery to solve, a question to answer, or a puzzle to unravel. Students must use historical and critical thinking skills to  uncover each story. Each module ends with two optional digital activities, a historical inquiry assignment and a service-learning project, related to the module theme.

Teachers should first visit the “Teach” section which allows them to preview each module (including its primary sources, questions and activities), learn how to get started, and see how the site’s modules connect with curriculum standards. In order to access the modules for classroom use, teachers do have to create their own account, but the sign up process is fast, easy, and best of all, free! The account allows teachers to set up multiple classes, choose specific module(s) for each class, assign due dates, and view student submissions.

This website explores "girls' history" with 40 oral history interviews conducted by women's studies students at Minnesota State University-Mankato. Each interviewee was asked extensively about her girlhood. Questions focused on adolescence and growing up as well as the social, cultural, and physical implications of girlhood and personal experiences. Topics include family, race, sexuality, education, and women's issues. The archive includes brief biographies, video clips, and transcripts of interviews (arranged thematically), photographs, and reflections of the interview process. Most of the women interviewed were born and raised in Minnesota, although a few came from other states with a smaller number immigrating from other countries. The site is not searchable, and the video clips are not high quality.

This website overviews the early history of the U.S. Parcel Post system. Although the website states that it examines “one hundred years of parcels, packages, and packets,” most of the content is from the first few years of the service, 1913 through 1915. An introduction and six subsections—Congressional Opposition, The First Packages, The Oddest Parcels, The Service in Use, Preparing for All of Those Packages, and A Century of Posted Parcels—feature short essays and 25 photographs and cartoons.

Though the website is text-heavy, teachers could potentially use its resources with students to examine early 20th-century United States history or changes in communication within the United States.

The Digital Public Library of America (DPLA) serves as a portal to the digital collections of more then 40 state, regional, and online-only libraries, museums, archives, and other cultural institutions. Created to strengthen access to public resources and to "create novel environments for learning, tools for discovery, and engaging apps," the DPLA is an invaluable first stop for teachers and students looking for primary sources, particularly regional history sources.

Visitors to the website can search the more than 4,500,000 objects in the collections of participating institutions using keywords, returning results they can filter by format, owning institution, partner, date, language, location, and subject. Clicking on an object brings up detailed metadata, including creator, date of creation, and a description of the object, as well as a link to its original location online. Visitors who create a free account can save their search results, make them private or public, and share them via Facebook, Twitter, or Google+.

Visitors can also browse objects on a map or timeline—a fantastic way to prompt thinking about how primary sources are located in time and space. The timeline stretches from 1000 BCE to the present. (Note that zooming into the map returns finer results.) In addition, more than eight virtual exhibits demonstrate how DPLA sources can be curated to tell stories about themes and events.

The DPLA's API (application programming interface) allows visitors with the know-how to create apps drawing on the DPLA's collections. An eclectic set of more than 10 apps lets visitors browse DPLA's search results as a "river of images," discover primary sources related to their Zotero bibliographies, and more.

A fantastic starting point for anyone looking for primary sources, teachers can feel confident pointing students towards the DPLA to begin research projects or turning to the DPLA themselves to find resources to support lesson plans.

This website explores the vaccination process from 900 CE to the present day. Tracing humanity's earliest known observations about disease transmission and immunity up to modern vaccination programs, the website includes articles, primary sources, and interactive activities.

Most attractive to educators will be the "Gallery" section. Browse more than 550 primary sources related to disease and vaccination, including pamphlets, photographs, artifacts, and more, as well as 90 videos. For easier browsing, filter the sources by topic, media type, or time period.

History teachers will also appreciate the "Activities" section. Seven interactive diagrams illustrate scientific and historical concepts, including herd immunity, how vaccinations work and how they are made, and changes in required vaccines over time. "Pioneer Breakthroughs," an interactive quiz, tests players' knowledge of vaccine-related discoveries, and "The Scientific Method" walks players through the steps in identifying the source of a disease outbreak and containing it. "Illsville," an online game, challenges players to keep the population of a town healthy from 1600 through the present day.

The site also includes an interactive timeline featuring images and short synopses of events from 900 CE to the present. View all of the events, or filter them by topic.

A database of essays in "Articles" covers more than 50 topics in the categories "Vaccine Science," "History and Society," "Vaccine Information," "Vaccine-preventable Diseases," and "Common Questions."

Note the four lesson plans in the "Educators" section. Spanish-language versions of site content are available as well.

This archive offers a collection of more than 900,000 photographs, maps, letters, documents, books, artifacts, and other items relating to all aspects of Texas history, from prehistory through the 20th century. Subjects include agriculture, arts and crafts, education, immigration, military and war, places, science and technology, sports and recreation, architecture, business and economics, government and law, literature, people, religion, social life and customs, and the Texas landscape and nature. Some subjects include sub-categories. For instance, social life and customs, with 694 items, includes 13 sub-categories, such as clothing, families, food and cooking, homes, slavery, and travel. The visitor can also search the collection by keyword.

Resources for educators include seven "primary source adventures," divided into 4th- and 7th-grade levels, with lesson plans, preparatory resources, student worksheets, and PowerPoint slideshows. Subjects of the lessons include Cabeza de Vaca, Hood's Texas Brigade in the Civil War, life in the Civilian Conservation Corps, the journey of Coronado, the Mier Expedition, runaway slaves, the Shelby County Regulator Moderator war, and a comparison of Wichita and Comanche village life. This website offers useful resources for both researching and teaching the history of Texas.

This massive mega-website presents thousands of documents and images related to Missouri's social, political, and economic history, linking to collections housed at universities, libraries, and heritage sites across the state. These resources are organized both into archival collections (by topic and source type) and virtual exhibits.

Archival collections include maps, municipal records, government and political records, newspapers, photographs and images, books and diaries, as well as topical collections on agriculture, medicine, women, business, exploration and settlement, art and popular culture, and family, rendering the website's resources as useful for genealogists as for those interested in history.

Exhibits encompass a diverse range of subjects, and include topics of relevance to Missouri history (Miss Carrie Watkins's cookbook from the mid-19th century, several exhibits on life at the University of Missouri and Washington University, Truman's Whistle Stop campaign), and topics outside of Missouri (the body in Medieval manuscripts, Roman imperial coins, propaganda posters from World War II, and drawings documenting dinosaur discovery before the mid-20th century).

Teachers will be especially interested in the large Education section, which includes curricular resources on topics such as African Americans in Missouri, Lewis and Clark's Expedition, Missouri State Fairs, and the history of dueling.

Pulitzer Prize-winning political cartoonist Ann Telnaes recently donated 81 of her cartoons to the Library of Congress. Those cartoons make up the entire collection of this site, which is searchable by keyword. Each cartoon is displayed with the size, format, medium, and publication date. The cartoons were published between 1996 and 2001, and each addresses a political or cultural issue from a domestic or international perspective. Although limited in holdings and scope, the site could be quite useful for those researching late 20th-century topics in political culture.

The election of 1896 was one of the most contentious in U.S. history. When Republican William McKinley defeated William Jennings Bryan on November 3rd, there were no fewer than six candidates on the ballot and the country was in the throes of an economic depression. This website provides close to 100 political cartoons surrounding the election campaigns.

The website acts like a virtual web of knowledge, with linked words in almost every sentence leading to helpful chunks of information on key themes, political parties and their leaders, print culture, and popular culture. Together, this information sheds light not only on the political situation in the 1890s, but also on the social, economic, and cultural contexts of the era. Special sections are devoted to, among many other topics, the bicycle craze, antisemitism, popular amusements, the Supreme Court, and women's suffrage. An extensive bibliography and a section devoted to teaching suggestions are also included.

Shaping the Constitution revolves around the role of Virginia in early American military and political history.

The first section, Becoming Free and Independent States, offers an overview of the perspectives of early Virginians on the Revolutionary War. The page includes biographies of figures of note, ranging from George Washington to Billy, a slave impressed by the British Navy. Each biography offers titles and/or web links for further reading. The main draw of the section, though, is a collection of 32 primary sources—broadsides, portraits, maps, warrants, petitions, a cartoon, and more. Each primary source can be selected for additional information, a transcript, related sources, and/or a high-resolution copy of the source. One surprise worth noting is that selecting the high-res copy of the source sometimes provides a PDF file with multiple related sources, rather than just the one you may have thought you were downloading.

Each of the following sections follow a similar structure—biographies, primary sources, and a short text overview. Topics include Virginia and the Constitutional debate; Bill of Rights; and 13th, 14th, 15th, and 19th Amendments.

An additional feature, located within the majority of the individual sections is a "For Educators" button. This button opens a list of lesson plans and their respective Virginia standards. Only the 15th and 19th Amendment portions of the site lack this option.

A laudable fact about this website is that it provides unpleasant sources (such as a photo of an Alexandria slave pen) as well as copies of major government documents. These sources are useful for showing precisely what facts of historical life various political decisions and amendments were created to change.