The Battle of Gettysburg: A Photographic Guide
- Take a tour of the National Military Park at Gettysburg through modern photographs. Includes monuments, historic buildings, hospital sites, scenic views, as well as battle related sites throughout Adams County, PA.
- http://www.gb1863.com/

HistoryQuest.com
- Historical marker search engine with over 40,000 sites in the database. Users can search local history by state and topic.
- http://www.historyquest.com/

U.S.S. Sequoia Presidential Yacht Artifact Preservation Foundation
- Aims to locate and preserve items from the Sequoia, which is listed on the National Register of Historic Places.
- http://www.sequoiayacht.us/

National Register of Historic Places
- Features a searchable database of properties listed on the National Register, educational and informational resources on American history and historic preservation, and a summary of the requirements of the National Historic Preservation Act.
- http://www.cr.nps.gov/nr/

Kentucky Civil War Sites
- Presented by the Commonwealth of Kentucky.
- http://www.state.ky.us/agencies/khc/civil.htm

We Shall Overcome
- Historic places of the civil rights movement, National register, and travel itinerary.
- http://www.cr.nps.gov/nr/travel/civilrights/index.htm

Coney Island
- The ups and downs of America's foremost amusement park.
- http://www.pbs.org/amex/coney

Homestead National Monument of America
- This National Park Service monument is located on the site of the one of the first homesteads claimed under the Homestead Act, and it is a tribute to the courage and tenacity of the settlers.
- http://www.nps.gov/home/index.htm