Professional Paper - United States Geological Survey, Issues 49-50

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Page 216 - With main Lesmahagow cannel coal as 100 (calculated on a basis of a production of 13,000 cubic feet of gas and 1,535.5 pounds of sperm per ton, and having regard also to the secondary products and the cost of the purification of the gas) — Falling Rock caniiel is equal to 112.
Page 61 - PP 45. The geography and geology of Alaska, a summary of existing knowledge, by AH Brooks, with a section on climate, by Cleveland Abbe, jr., and a topographic map and description thereof, by KM Goode.
Page 59 - B 137. The geology of the Fort Riley Military Reservation and vicinity, Kansas, by Robert Hay.

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