FIGURE 3.1 U.S. energy production by source—1850–2000.

SOURCE: U.S. Department of the Interior. 1975. 1850–1949, Energy Perspectives: A Presentation of Major Energy and Energy-Related Data; 1950–2000, Annual Energy Review 2000, Table 1.2.

FIGURE 3.2 U.S. Energy consumption by source—1850–2000.

SOURCE: U.S. Department of the Interior. 1975. 1850–1949, Energy Perspectives: A Presentation of Major Energy and Energy-Related Data; 1950–2000, Annual Energy Review 2000, Table 1.3.



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