CivilWar.com
We’ll overlook the pop-up ads in order to tap this site’s wealth of battle maps, detailed timeline, 5,500 photos and searchable text of the Official Record (OR for short), the account of the Civil War from the commanders on the ground.
eHistory
Another spot to search the OR, this Ohio State University site also offers timelines, more than 100,000 pages of historical information, biographies and thousands of maps and old photos.
Library of Congress
Besides offering the library’s online catalog of almost every book in existence and the National Union Catalog of Manuscript Collections from 1986 to date, this site excels at making history come to life. Its American Memory Project collects more than 9 million treasures from our past and exhibits many of them online. For still more images, see the Prints and Photographs Online Catalog.
Making of America: Michigan & Cornell
This dual site continues to serve up a rich swath of US history with digitized version of thousands of 19th-century publications. Between the two portals, holdings total 4.7 million pages in 13,000 volumes. Cornell’s portion offers yet another searchable version of the Civil War OR.
New York Public Library Digital
A recent winner for Best Research Site at the annual Best of the Web awards, the New York Public Library’s digital incarnation includes more than a half-million manuscripts and books, historical maps, vintage posters, rare prints, photographs and printed ephemera.
The Oregon Trail
Bring to life the journey of hundreds of thousands Americans who went West on the Oregon Trail. If you don’t have Oregon-bound ancestors, try the companion sites covering the Gold Rush and “trailblazers” such as Meriwether Lewis and William Clark’s Corps of Discovery.
OurTimeLines.com
We love the color-coded timelines of world events this site generates for ancestors’ lifetimes. You also can insert up to 10 personal events, such as schooling, marriages, employment and military service, and create a list of famous people born the same year as your ancestor.