Books by Hiram Brown Humphrey:
Books in the extended shelves:
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Humphrey, Hiram Brown, 1895-: Accident experience and cost in Virginia coal mines 1929 to 1933, inclusive (U.S. Dept. of the Interior, Bureau of Mines, 1934), also by Joseph F. Davies and United States Bureau of Mines (page images at HathiTrust)- Humphrey, Hiram Brown, 1895-: Coal-mine fatalities in Kentucky in 1931, 1932, and 1933 (U.S. Dept. of the Interior, Bureau of Mines, 1934), also by J. F. Davies (page images at HathiTrust)
- Humphrey, Hiram Brown, 1895-: Coal-mine fatalities in Kentucky in 1934 (U.S. Dept. of the Interior, Bureau of Mines, 1936), also by Joseph F. Davies (page images at HathiTrust)
- Humphrey, Hiram Brown, 1895-: Explosions in Alabama coal mines (U.S. Dept. of Commerce, Bureau of Mines, 1930), also by Frank E. Cash (page images at HathiTrust)
- Humphrey, Hiram Brown, 1895-: Explosions in Kentucky coal mines, January 1, 1884-June 30, 1933 (U.S. Dept. of Commerce, Bureau of Mines, 1934), also by J. F. Davies and United States Bureau of Mines (page images at HathiTrust)
- Humphrey, Hiram Brown, 1895-: Explosions in Virginia coal mines 1893 to 1933 (U.S. Dept. of the Interior, Bureau of Mines, 1934), also by Joseph F. Davies and United States Bureau of Mines (page images at HathiTrust)
- Humphrey, Hiram Brown, 1895-: Fatal accidents in Alabama coal mines during 1930 (U.S. Dept. of Commerce, Bureau of Mines, 1931), also by Frank E. Cash and United States Bureau of Mines (page images at HathiTrust)
- Humphrey, Hiram Brown, 1895-: Fatalities in Alabama coal mines (U.S. Dept. of Commerce, Bureau of Mines, 1930), also by Frank E. Cash (page images at HathiTrust)
- Humphrey, Hiram Brown, 1895-: Fatalities in Tennessee coal mines (U.S. Dept. of Commerce, Bureau of Mines, 1931), also by Frank E. Cash and United States Bureau of Mines (page images at HathiTrust)
- Humphrey, Hiram Brown, 1895-: Historical summary of coal-mine explosions in the United States (U.S. Govt. Print. Off., 1959) (page images at HathiTrust)
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