A map from 1911 of North America, Central America, Greenland, and the Caribbean to Puerto Rico showing the areas of primary vegetation types for the region. The map is color-coded to show areas of forests, areas of woodland, grass, and cultivation, areas of steppes and prairies, the deserts, and areas of tundra and mountain flora. A chart at the bottom of the map shows a cross- section of vertical profile from San Francisco to Cape Cod.