Copper Mining, 1916
A world map from 1916 showing the principal copper–producing regions of the world at the time. "World’s annual production, 3,100,000,000 pounds. Leading copper–producing countries, with percentages of world production: United States ...

Petroleum Production, 1916
A world map from 1916 showing the principal petroleum–producing regions of the world at the time. "World’s annual production, 450,000,000 barrels of 42 gallons each. Leading petroleum–producing countries, with percentages of world pr...

Gold and Silver Production, 1916
A world map from 1916, keyed to show the principal gold and silver producing regions of the world at the time. "World’s annual production of gold, $457,000,000. Leading gold–producing regions, with percentages of world production: Africa (...

Winds and Rainfall- Northern Summer, 1917
World rainfall and wind patterns....

World Isothermal Lines- January, 1917
A map showing world isothermal lines in January....

World Isothermal Lines- July, 1917
A map showing world isothermal lines in July....

World Isobaric Lines- January, 1917
A map showing world isothermal lines in January....

World Isobaric Lines- July, 1917
A map showing world isothermal lines in July....

Map of The World on Mercator's Projection, 1918
This is a map of the world from 1918 showing the earth on a Mercator's Projection. This map is color–coded to show the colonial possessions of Great Britain, France, Germany, Portugal, Spain, Netherlands, Italy, Denmark, and the United States i...

Transportation Routes and Telegraph Lines, 1918
Shows transcontinental railways, steamship routes, telegraph lines, and cables....