MapMap of the Rio Grande River valley in New Mexico and Colorado
- Contributor: Rael, Juan Bautista
- Date: 1951-00-00
MapPuerto Rico e islas limítrofes "... impreso en 1952." Relief shown by contours and shading. Includes inset of "Distritos senatoriales." Available also through the Library of Congress Web site as a raster image.
- Contributor: Geological Survey (U.S.)
- Date: 1952