31. Principal rivers, roads, and canals, 1840 Publication/Creation: [S.l.] : Maps.com, c1999 Resource Type: Map Access & Availability: Loading
32. Public school segregation by state, May 1954 Publication/Creation: [S.l.] : Maps.com, c1999 Resource Type: Map Access & Availability: Loading
33. Puerto Rico Publication/Creation: [S.l.] : Maps.com, c1999 Resource Type: Map Access & Availability: Loading
34. Puerto Rico Publication/Creation: [S.l.] : Maps.com, c1999 Resource Type: Map Access & Availability: Loading