This subscription-only website presents an extensive archive of U.S. history documents, offering roughly 6,300 publications. The archive provides access to every Congressional and Executive document of the first 14 U.S. Congresses, and additional coverage through the 25th Congress, as well as tables, maps, charts, and other illustrations. The collection is particularly strong in military history, with 205 documents about military bases and posts and 134 on military construction. Other documents address topics such as westward expansion, Native American affairs, and issues surrounding slavery. This collection also includes numerous speeches and messages by Presidents Washington, Adams, Jefferson, and Madison.

Users can browse the archive by category: Subjects, Publication Category, Standing-Committee Author, Document Class, and Congress. Simple and advanced searches are available, enabling easy access into this large collection of documents. For those with access, this site is a valuable resource for researching the government and military in the early United States.

This subscription-only website presents an extensive archive of documents relevant to early U.S. history, offering full-color facsimile images of approximately 30,000 broadsides and ephemera. Advertisements, campaign literature, poems, juvenile literature, and Civil War envelopes comprise the bulk of the collection, making the archive especially valuable for those interested in early American consumer culture, political campaigns, and literary life. The collection also contains rich information on slavery, Native American relations, and local events—plays, gatherings, and religious events.

Users can browse the archive by category: Genre, Subjects, Author, History of Printing, Place of Publication, and Language. Simple and advanced searches are available, enabling easy access into this large collection of documents. For those with access, this site provides an extensive resource for researching 18th- and 19th-century North America.

The Yale Digital Commons provides access to sources from the Yale Center for British Art, Yale Peabody Museum of Natural History, Yale University Art Gallery, Yale University Library, and Yale University on iTunes U.

Getting acquainted with the commons can be somewhat daunting. Arrival on the homepage simply offers a keyword search with only a slight indication of the extent or content types of the collections you can search. The description states the contents include "art, natural history, books, and maps, as well as photos, audio, and video documenting people, places, and events that form part of Yale's institutional identity and contribution to scholarship."

The best way to proceed is to select Advanced Search. From here, you can limit a search to items available online. You can also pick one or more of the aforementioned institutions to search within, or choose specific collections which range from African Art or American Decorative Arts to Vertebrate Zoology or Yale University.

Sources you can find using this system include apparel; architectural elements; arms and armor; books, coins, and medals; calligraphy; containers; drawings and watercolors; flatware; fossils; furniture; hardware; inscriptions; lighting devices; jewelry; manuscripts and documents; masks; minerals; miniatures; models; mosaics; musical instruments; packaging; paintings; photographs; plant and animal remains; print templates; scientific instruments; stained glass; textiles; tools and equipment; timepieces; toys and games; sculpture; and wallpaper.

The nearly 1,000 maps available on this site document the conflict between Great Britain and America for ownership of the region. They also illustrate the transformation of the physical boundaries of the Pacific region and the efforts of its inhabitants to control the land. The site includes a valuable interactive timeline that presents the maps in historical perspective. The collection contains large-scale geographic maps of the land and sea and small hand-drawn sketches of settlements. The maps are very detailed and most were created in the late-19th- and early-20th-century. Maps are primarily concerned with geography, transportation, climate, population, culture, politics, and tourism and there is a searchable index that is organized according to 21 themes, such as forests, Puget Sound, railroads, Seattle, Washington State University, and Native American reservations.

A drop-down menu allows users to examine and enlarge thumbnail images of each map. Biographical and detailed descriptive text (most between 20 and 500 words) is presented with each image, and the text is searchable by keyword. Created as a resource to help students, teachers and researchers understand the history and development of the state of Washington, this site will appeal to those interested in Washington, historical geography, and the development of cartography.