《National Geographic Magazine Vol. 08 - 07-08. July-August 1897》 - 免费有声读物

The National Geographic Magazine, an illustrated monthly, the July-August Number.
It includes the following articles:

• The Venezuelan Boundary Commission and its Work, by Marcus Baker
• Mineral Production in the United States, by John Hyde
• The Forests and Deserts of Arizona, by Bernard E. Fernow
• Mount St. Helens, by Lieut. Charles P. Elliott
• Geographic Literature