Walter M. Harris

• Federal and Indian lands: coal, phosphate, potash, sodium, and other mineral production, royalty income, and related statistics, 1920 through 1971
• Federal and Indian lands: coal, phosphate, potash, sodium, and other mineral production, royalty income, and related statistics, 1920 through 1972, fiscal year 1972
• Federal and Indian lands: oil and gas production, royalty income and related statistics, 1920 through 1970