Presented in this 1964 yearbook are highlights of the work done by the various bureaus and offices of the Department of the Interior. Coverage is broad, relating to many aspects of conservation in the United States in a descriptive, non-technical style. Some of the topics considered include the quality of living; recreation, water, mineral, fuel, land, fish, and wildlife resources; research programs; human needs and resources; and Department management. Numerous graphics, colored and black and white pictures enhance the narration. (BL)