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.

This site illustrates the ways in which the late 19th-century history of Minnesota is tied to the rise of and connection between four industries: lumbering, sawmilling, farming, and flour milling. The site uses a comic book-like format (large picture panels with minimal text), and incorporates the diaries and personal recollections of four Minnesotans who participated as lumbermen, sawyers, farmers, or flour millers. The colorful format attracts attention and the short presentations are appropriate for younger viewers (elementary, middle, and even high school students). The site relies primarily on Flash to present the stories, but viewers can also read and view the stories in HTML.

Each segment provides links to outside resources (about 40 in all) for additional information. Explanatory links define terms that might be unfamiliar to visitors, suggest topics for discussion, and offer additional supporting materials (for example, the site links internally to approximately 50 period photographs and diary entries). Teachers may find useful the nine suggestions for classroom activities, such as analyzing photographic evidence or examining the perspective of one of the storytellers.

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 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.

The Murphy and Bolanz Company, a Dallas real estate firm established in 1876 that was the official mapmaker for the City of Dallas, produced a set of maps that are detailed and rare. This site, made possible by a grant from the Texas State Library and Archives Commission, is an online version of the Murphy and Bolanz maps, a nine-volume collection of approximately 3,500 maps. Although currently only three of the volumes are available through the site, all nine will eventually be digitized. The voluminous collection consists of details of each block in Dallas and some of the surrounding suburban towns, including original maps of most towns and communities in Dallas County from the 1880s to the 1920s. These maps contain layouts for neighborhoods, the name, and date of original property owners, as well as sites of early schoolhouses, streetcar lines, businesses, and parks. Users will find African-American, Jewish, and Catholic cemeteries depicted on the maps and the sites of early Dallas businesses, such as Neiman Marcus, Sanger Brothers, and Adolphus Hotel.

The site is searchable by index or by street name, personal name, building name, railroad, or geographic feature. This unique online collection holds enormous research potential for historians and genealogists, but also for preservationists who will value the abundance of architectural and structural information and for legal researchers who will find the early property ownership details indispensable. The maps are also a great resource for geography teachers and students.

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.

An exhibition of 18 works by one of America's great artists, Thomas Eakins (1844-1916), with annotations of 100-300 words on each image. Eakins, known for applying Paris-learned Beaux-Arts techniques to realistic depictions of his own Philadelphia milieu, often painted persons engrossed in everyday actions: sailboats racing and oarsmen rowing on the Schuykill River; surgeons overseeing students operating on patients; a concert singer performing; a baby playing; and coach horses trotting through Fairmont Park. Although most of the images —which date from 1871-1902—are reproductions of paintings, the exhibit also includes a preparatory drawing, a photograph of the artist's anatomical casts, and two photographic studies, one influenced by the pioneer motion studies of Eadweard Muybridge. As the exhibition text notes, scholars have recently discovered that Eakins used projected photographs to create his works.

Also included are expressive portraits of Eakins' friends and contemporaries, including poet Walt Whitman, who wrote that Eakins was "not a painter, but a force"; controversial anthropologist Frank Hamilton Cushing; and sculptor William Rush engaged in transforming a nude model into a mythic image. Valuable for students of the history of art and for those interested in realistic depictions of late 19th-century life and culture in Philadelphia.

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.