1. Underground Railroad, 1860 Publication/Creation: [S.l.] : Maps.com, c2000 Resource Type: Map Access & Availability: Loading
2. United States Publication/Creation: [S.l.] : Maps.com, c1999 Resource Type: Map Access & Availability: Loading
3. United States Publication/Creation: [S.l.] : Maps.com, c1999 Resource Type: Map Access & Availability: Loading
4. United States territory as of 1900 Publication/Creation: [S.l.] : Maps.com, c1997 Resource Type: Map Access & Availability: Loading
5. U.S. expansion and the Alaska Purchase, 1867 Publication/Creation: [S.l.] : Maps.com, c2000 Resource Type: Map Access & Availability: Loading