The National Jukebox gives you free access to more than 10,000 historical recordings—the iPod of America.

Recordings can be browsed by date, location, and language. Genres lets you sort by category—classical, ethnic characterizations, popular music (with several subsets), religious, and spoken word. You can even figure out what music was recorded any day of the year. Today in history or a new birthday song, anyone?

You can also explore existing playlists or create your own for use in class. Why not have your students pick a few songs for their own playlists, and then describe how the pieces relate to each other in terms of historical context?

Finally, you can peruse the entirety of a digitized copy of The Victrola Book of the Opera, 1919.

This website serves as an accompaniment to and location to showcase the PBS American Experience documentary Freedom Riders, which originally aired in May 2011. The Freedom Riders were young white and African American individuals who rode busses and trains in the South during 1961 as a form of peaceful protest against the Jim Crow laws. At the time, they met with threats, violence, and incarceration.

Follow along with an interactive timeline and an interactive map. Each leg of the journey is summarized with a couple of sentences of text, and cities where major events took place can be selected for a quick overview. You can also read brief biographies of key figures—riders, politicians, movement leaders, and more—or information on the issues of the day from Jim Crow laws to Vietnam War protests.

View short film clips or the entire documentary here. The full documentary transcript is also available for download. The Teachers' Domain, although it sounds appealing, contains only the same film clips. The difference is that in this section the video clips are all marked as being for 6th through 12th grade.

Finally, the most "teacher-targeted" material on the site is a downloadable teacher's guide for use when viewing the documentary.

The Center on Congress, led by former U.S. Representative Lee Hamilton, exists to help the public better understand the role of Congress and the public's relationship to it. Their audience includes the general public, teachers, and journalists.

Your first thought as an educator may be to click on Teacher Resources. However, this section is more of a gateway to content in Learn About Congress than a section unto itself. That said, Classroom Resources does include a tool for paring down the site's educational materials to the appropriate grade level and topic, as well as best practices videos of lessons in action.

Learning About Congress has the widest variety of content useful to the K-12 educator. Resources include approximately 8 interactive modules, more than 20 short animated videos, a collection of live-action video clips of "insider views," more than 30 brief audio presentations on issues ranging from disaster relief to bilingual education, and a variety of relevant reading material. The spoken narration on the interactive modules tends to be dry, and would more than likely only be of use in the higher grades. However, the animated videos are enthusiastically narrated, making them more appropriate for a wider range of viewers. A free Citizen's Guide helps to connect daily life to the actions of Congress. The guide is not unlike a textbook in terms of language and graphic design. As such, its format should be readily accessible and familiar to the average student.

Depending on your computer access and comfort with online activities, you may also be interested in the Virtual Congress where your students can create members of Congress, move their avatars through digital recreations of key locations, and participate in a "multi-player" setting proposing legislation. Another option is Teaching with Primary Sources, a joint effort between the Center on Congress and the Library of Congress, providing separate entry points for teachers and students. These offerings require free registration.

Other items of interest on the site include results of public and political scientists' surveys on Congress' function, beginning in 2002; a blog concerning topics relevant to current Congressional issues; and Congressional FAQs. Teachers can also apply for the American Civic Education Teacher Awards.

The Presidential Timeline curates and presents primary sources drawn from twelve Presidential Libraries and Museums, institutions housing and presenting archival materials for the presidents from Herbert Hoover to Bill Clinton. Under "Interactive Timeline," you can choose any of the 12 presidents—Herbert Hoover, Franklin D. Roosevelt, Harry S. Truman, Dwight D. Eisenhower, John F. Kennedy, Lyndon B. Johnson, Richard Nixon, Gerald Ford, Jimmy Carter, Ronald Reagan, George Bush, or William Jefferson Clinton—and explore his life.

Timelines consist of at least two sections: "Early Life and Career" and "Presidency." All timelines except Roosevelt's, Kennedy's, and Clinton's also include a "Post-Presidency" section. Marks on the timeline indicate events of interest in the president's life and career; click on a mark to read a brief summary of the event, and to view primary sources (a + sign in the mark indicates primary sources are available).

Browse "Exhibits," also under "Interactive Timeline," for more than 30 collections of short essays, accompanied by 2–6 primary sources per essay, covering major events and topics related to the presidents' lives and careers. Topics covered stretch from "The Stock Market Crash, October 1929" to "William J. Clinton and the Supreme Court, 1993-2001."

Try the "Gallery" to search more than 1,500 primary sources (including artifacts, maps and charts, video, photographs, sounds recordings, and documents) by keyword, library of origin, date, or source type.

The "Educators" section includes 14 ready-to-go activities, on topics ranging from Pearl Harbor to the Iran Hostage Crisis to Bill Clinton's visit to Little Rock Central High School. Students and teachers can view pre-selected primary sources online in each activity, with suggested rubrics, applicable standards, and links to related sources also included. "Resources" links out to 16 websites recommended for history and primary sources, education, and technology, while "Multimedia" rounds up more than 50 audio and video primary source clips for download.

If you can't access the interactive Flash version of the timeline, try the HTML "Text Version" that includes the same primary sources.

In 2008, the Smithsonian launched History Explorer, in partnership with Verizon's Thinkfinity. Designed as a portal into the National Museum of American History's online resources, the site lets users search or browse the museum's resources. Use the keyword search to look up artifacts, interactives/media, lessons/activities, primary sources, reviewed websites, reference materials, and worksheets; narrow the search by selecting grade levels, historical era, resource type (artifact, lesson, worksheet, etc.), and/or cross-curricular connection.

Or browse by content type, using the tabs at the top of the page—"Lessons and Activities" contains more than 300 resources designed for teacher presentation; "Interactives and Media" contains more than 100 resources including audio, video, or interactive components; and "Museum Artifacts" contains more than 300 artifacts suitable for object-based learning. All individual entries list related content and relevant National History Standards and teaching strategies.

"Themes" offers collections of resources for major U.S. history topics such as immigration and civil rights; "Books" lists synopses for nearly 300 books suitable for reading levels varying from preschool to adult; and "Teacher Resources" includes information on teaching with primary sources, webinars, and joining the Thinkfinity Community. Check "Web Links" for links out to more than 100 history websites, chosen for design, usability, and content.

Established by Ronald Reagan, the Reagan Foundation preserves Presidential history and is "dedicated to the promotion of individual liberty, economic opportunity, global democracy, and national pride." Its online presence provides both primary and secondary sources on the life and presidency of Reagan.

Visitors can follow a timeline of Reagan's life in Life and Times, and read five short essays (800–1,000 words) on his domestic, foreign, and economic polices, Mikhail Gorbachev, and "Reagan the Man" in The Presidency. Search or browse Reagan's speeches, with both transcripts and video recordings and search or browse quotes drawn from his speaking in Reagan Quotes and Speeches. The entries of his White House Diary from 1981–1989 may also be browsed, and a separate subsection on Nancy Reagan provides a timeline of her life and brief essays on her relationship with Ronald Reagan and her political causes.

The Reagan Foundation's Archives make only a fraction of their holdings available online. However, visitors can access fast facts on Reagan and his presidency; browse a selection of photos of the President and the First Lady, organized by topic; or search or browse (by month) the Public Papers of President Ronald W. Reagan, which includes statements, speeches, and papers released by the Office of the Press from 1981–1989.

The Archives' For Educators section includes several document-based lesson plans, as well as curriculum based on current museum exhibits.

Useful for educators looking for both introductory material to Reagan and his presidency and more specific primary sources.

The Metal Trades Council Union alliance in Seattle shut down the shipyards on February 6, 1919, in hopes of forcing a promised pay increase following the strict price controls set during World War I. After the Metal Trades Council obtained the support of Seattle's Central Labor Alliance, more than 65,000 Seattle workers staged a sympathy walkout, creating what has come to be known as the first "general strike" in U.S. history, and laying the foundation for labor unrest in the nation's steel, coal, and meatpacking industries in the years that followed.

This website documents the history of this strike through a large collection of primary and secondary source materials.

A four-minute video introduction, containing original film footage from 1919, is a useful place to begin for those unfamiliar with Seattle's labor history.

The website also includes contemporary and more recent newspaper articles, including more than 180 articles from Seattle's major newspapers covering the February 1919 events; 15 oral histories; more than 30 photographs of labor activity in Seattle, prominent union members, and strike activities; as well as research reports on the strike by history students at the University of Washington.

This massive archive contains more than 84.5 million documents, more than 26 million of which are fully keyword searchable, from Washington State and local agencies. These documents include contracts, birth, marriage, military, naturalization, death, cemetery, and census records, land records and surveys, oaths of office, maps, photographs, power of attorney records, and date from the late 19th century to the present.

A detailed list of collections is available through the Collections section. Here, users will find detailed information on all record collections, including dates and counties available, and options to search by county or within sub-collections.

The casual user may want to begin with several browsable featured collections, which contain photographs from the Spokane city planning department, audio recordings of the Washington House of Representatives Committee Meetings, and 200 photographs of daily life in the Big Bend region of the Columbia Basin.

Useful for teachers and historical researchers interested in many aspects of life in the West, and those interested in genealogy with connections to Washington State.

Curated by Carl Smith, Professor of English and American Studies at Northwestern University in a collaborative effort with the Chicago Historical Society, this rich site provides an online exhibit commemorating one of the most notorious incidents in late-nineteenth-century labor history, the Haymarket Affair. On May 4, 1886, two workers were killed in a struggle between police and locked-out union members at the McCormick Reaper factory. On May 5, 1886, someone threw a dynamite bomb into a group of Chicago policemen sent to control the ensuing protest, killing seven. This site is an online exhibit of selected materials from the Chicago Historical Society's Haymarket Affair Digital Collection. Organized in the form of a drama, the site contains a prologue, five acts, and an epilogue, all arranged chronologically.

The prologue, "Whither America," covers the period between Chicago's Great Fire in 1871 through 1880, with emphasis on the railroad strike of 1877 and other developments in the radicalization of American workers. Act I, "Subterranean Fire," discusses the widening class divisions and resulting rising level of violence in America. Act II, "Let Your Tragedy be Enacted Here," recounts the demonstrations of 1886, the protestors' meeting, and the bombing. Act III, "Toils of the Law," covers the legal proceedings beginning with the "red scare" and police "witch hunt" following the bombing and continuing through the sentencing of the convicted anarchists in October 1886. Act IV, "Voice of People," relates the legal and public appeals ending with the executions of 1887. Act V, "Raising the Dead," moves from the funerals of the executed men to Governor John P. Altgeld's pardon of the surviving defendants in 1893.

The epilogue, "Drama Without End," deals with the contested heritage of Haymarket, including centennial events in 1986. Each part consists of a 500-word interpretive essay and topical sections including a total of over 50 visual materials, such as images of artifacts, photographs, and engravings of the people involved in the Haymarket Affair, and over 30 facsimiles of selected manuscripts and printed materials. Each "Act" contains a final section that includes full-text transcriptions of documents from the Haymarket Digital Collection. The site also includes virtual tours of the Haymarket area and of Forest Home Cemetery, where a monument to the convicted men is located, and audio recordings of contemporary labor songs. This site is beautifully contextualized, well-presented, and easy to navigate. It contains a keyword search engine as well as a table of contents.

This site exhibits a selection of material relating to Gerald Ford's presidency. The site provides a 2,500-word biography of the former president and 800 words on his wife, Betty, as well as 230 photographs of their pre-presidential lives. More than 120 photographs of Ford in office range in subject from family pets to the Nixon pardon. A sample of 15 facsimile documents about Vietnam represents a larger collection that has recently been declassified.

Other documents about Vietnam include General Fred C. Weyland's Vietnam assessment memo of April 1975, eight memoranda (4-7 pages) on conversations about the War, nine National Security Council meeting minutes (7-30 pages), and 14 photos of Ford and others in meetings about Vietnam. There are 41 National Security Study memos and 83 National Security Decision memos available on topics such as Israeli military requirements, the classification of nuclear safeguards, and U.S. policy for Antarctica. A collection of 20 items from Ford's 1976 campaign for president includes sheet music for his campaign theme song. Of the 40 Ford speeches and writings from 1970-2000 collected here, three are available as audio.

The site is searchable by subject and easy to navigate. It is a useful resource for research on Ford, the Vietnam War, and the presidency.