Divided into six galleries, this website features 21 online exhibits. The first gallery, Binding the Nation, includes six exhibits such as "The Post and the Press" and "Moving West" which explains how the postal service contracted with stagecoach lines to transport mail across the frontier. The second gallery, Customers and Communities, uses a series of exhibits to examine the development of mail delivery to the growing urban and rural populations in the 20th century. For example, through a virtual tour of the "Mail by Rail," visitors learn about the revolutionary Railway Mail Service. Moving the Mail is the third gallery, with three exhibits, and Art of Cards and Letters, the fourth gallery, spotlights the important role mail has held as a medium for personal communications, including "Undercover: The Evolution of the American Envelope." The fifth gallery, Artistic License comprises six exhibits; and the last, the Philatelic Gallery, includes exhibits entitled "Rarities Vault" and "Inverts." This gallery also features changing exhibits featuring special objects from both the Museum and private collections, including an online version of "Mail to the Chief," a collection of original drawings by Franklin Roosevelt of the many stamps he designed.

There are also two research guides online for the Benjamin B. Lipsner Airmail Collection and for the 1847 Federal Postage Stamp Correspondence. An Activity Zone offers materials for young students and free downloadable curriculum guides (grades K through college level) are available for teachers. The 24 online articles from EnRoute, the National Postal Museum's membership magazine, complete this rich site.

These 66 photographs capture the diverse experiences of children from many different parts of the world from the 1840s to the mid-20th century. The collection includes early 19th-century daguerreotypes, turn of the century studio portraits, and 20th-century prints and stereographs of young people. The portraits of children include those born into privilege, such as Tad Lincoln, son of the President Abraham Lincoln, and a young Theodore Roosevelt, as well as children of tenant farmers in Florida, California, and Texas during the Great Depression. There are also images of children from around the world, including children in Paris, Puerto Rico, Greece, and the Virgin Islands. There are poignant photographs of Cheyenne and Apache children from the Pacific Northwest, Mexican girls in Texas, and African American boys in Harlem.

The collection includes photographs culled from the American Red Cross Collection and the W.E. B. Du Bois Collection, in addition to pictures of African Americans in Washington D.C. by renowned photographer Gordon Parks. Four short descriptions (50 words) by Pulitzer Prize-winning author Robert Coles and information about his book, produced in conjunction with the exhibit, When They Were Young, accompany the collection.

The U.S. Army Yellow Fever Commission demonstrated in 1900 that the mosquito transmitted yellow fever. This archive is an extensive compilation of 5,500 items related to the Commission's findings. Documents span from 1850 to 1966 and include correspondence, reports, photographs, and artifacts. The site is organized into sections pertaining to six key individuals: Walter Reed, Jesse W. Lazear, Henry Rose Carter, Jefferson Randolph Kean, Albert E. Truby, and Philip S. Hench. Each section includes an introduction (800 to 1,000 words) and is searchable by date, series, subject, or keyword.

In addition, there is a 4,800-word essay entitled "United States Army Yellow Fever Commission." The Walter Reed Series (1874-1936) and the Reed Family Additions (1877-1902) comprise Reed's original letters concerning his seminal work with yellow fever in Cuba. The Jesse Lazear Series and Henry Rose Carter Series, which span from the 1860s to 1930s detail the men's involvement with the Yellow Fever Commission in Cuba and their careers in public health. The other series include personal and professional correspondence and research during the period of the Yellow Fever Commission's work in Cuba. A separate section entitled "Books" contains a first edition biography of Walter Reed and a 1941 version of Walter Reed, Doctor in Uniform, a biography for young adults. "Highlights" comprises a sampling of 30 unique documents, many of which comment on the importance of the Cuban American relationship. Those interested in exploring the history of medicine and science, social history, military history, public health policy, tropical medicine, and biomedical ethics will find this site of great interest.

This archive makes available varied material on English, American, and Missouri history, including speeches, pamphlets, plat books, and government documents. The collection of Daniel Webster speeches offers more than 100 items that, in addition to his addresses and speeches in Congress, include sermons, addresses, orations, and speeches in his honor, as well as some correspondence. The Fourth of July orations collection contains more than 100 items, including orations by John Quincy Adams, Charles F. Adams, and Daniel Webster. The site also offers a collection of more than 110 Missouri county plat books published in 1930, a collection of various items of Missouriana, and a group of four miscellaneous texts that includes an 80-page text on the liberty of the press published in London in 1812. The collection of 17th- to 19th-century British religious, political, and legal tracts contains more than 400 documents and pamphlets published primarily during the English Civil War. Each collection can be individually searched. For anyone researching 17th- and 18th-century transatlantic history, the political history of New England, or the history of Missouri, this is a collection worth consulting.

This website serves as an introduction to the Abraham Lincoln Presidential Library and Museum in Springfield, IL.

In addition to logistical information on visiting the library and museum (including floor plans, photographs, tips on planning school visits, exhibit information, and archival collection descriptions especially useful for researchers), the website also presents a substantial amount of digital material on Lincoln's life and times and Illinois history more generally.

New users may want to begin with an extensive timeline documenting major events in Lincoln's life. Teachers will be especially interested in the resources available in the website's Education section, which includes extensive guides to teaching the Gettysburg Address, teaching with objects, women's history, African American history, and celebrating Christmas at the White House.

The website also includes a Boys in Blue database of many Illinois soldiers who fought for the Union during the Civil War, as well as an oral history project documenting the lives of Illinois citizens from all walks of life. Current topics include war veterans and agriculture, with plans to include hundreds more interviews on statecraft, war and terror, family memories, and African American history.

This site contains the full text of the 185 primary documents, roughly a 600-page book, dealing with urban planning. Dozens of journals, conference reports, books, official documents, and other sources are easy to navigate. In addition to the key word search engine, the site includes a topical bibliography that provides more than a dozen headings, and alphabetical and chronological bibliographies. Each entry also has a link to the full text of the document. Essays discuss a broad range of issues, including surveys of the state of urban planning, discussions of how urban improvements should be made, and details of the legal issues of land use regulations. Each document includes a brief (about 1,000 words) general introduction that sets the material in historical perspective. The selections on the site include Frederick Law Olmstead's commentary on the City Beautiful movement and continue to his son's discussion of housing developments in 1919. This site will prove useful to anyone concerned with urban planning or urban history and especially valuable to those studying how urban planning developed through World War I.

Between 1850 and 1950, the population of New York City grew from just under 700,000 to more than seven million. This collection of 1,300 photographs documents the manifold changes that characterized New York City's urban environment in this 100 year period. The photographs are gathered from several collections: 1896 street views by Staten Island photographer Alice Austen, 1911 panoramas of Fifth Avenue, Washington Irving's home in the 1860s, 31 photo-lithographics of mid-1800s Hudson River mansions, the Sperr collection of 335 photographs taken between 1931 and 1942, and a general collection of photographs divided by city borough. Highlights include Austen's images of New York City laborers (organ grinders, bootblacks, police men, messenger boys) and of her home life among the State Island elite—both rare subjects for this period, and the Sperr collection's documentation of the construction of the Belt Parkway. Part of the New York Public Library's renowned digital library collection, this website is essential for those interested in U.S. urban history, architecture, the history of New York City, and the built environment.

More than 40 historical census reports, including decennial reports dating back to 1790, are available for download on this website as PDFs. Historical statistics address topics such as population totals by race, urban or rural status, educational attainment, and means of transportation to work, among others.

There are also histories of the 21 U.S. census questionnaires produced from 1790 to 2000, including instructions to census marshals dating back to 1820. Comparative tables show which censuses included specific questions on subjects, such as ancestry and mental disabilities, and whether respondents were deaf, blind, insane, feeble-minded, paupers, literate, or convicts. Additional information includes state and territorial censuses, mortality schedules produced for a number of 19th-century censuses, population at the time of each census, and supplemental censuses taken at various times on free and slave inhabitants, Indian populations, unemployment, and housing.

Because of the PDF format, the reports take a number of minutes to download. These materials are useful for those needing demographic information or researching the history of census taking and the development of census categories.

Currently provides more than 122 images of objects, documents, and photographs pertaining to the history of the town of Worthington, OH, founded in 1803 by a group of families migrating from western Connecticut and Massachusetts. The site creators plan to add more materials in the future, including digitized versions of 19th- and 20th-century newspapers and oral histories. Users may search by subject, title, or keyword in bibliographic records—which include abstracts of up to 100 words for each item—or browse the collection by decade or 27 categories covering aspects of the social, economic, cultural, civic, and environmental history of the town. Includes links to 22 related sites. Useful for those studying local history.

Provides historical information and photographs pertaining to more than 300 surveying instruments used in America to delimit land and transport boundaries "since the first European colonists settled here some 400 years ago and turned the American landscape into property." Visitors may browse by 23 types of instruments—from alidades to zenith telescopes—and by 117 names of instrument makers. Informative texts on makers, types of instruments, and specific instruments run from one sentence to 300 words in length. Entries include bibliographic references. Of value for those studying the history of science and technology.