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Guidebook of the Western United StatesPart A The Northern Pacific route with a side trip to Yellowstone ParkBook出版 1916
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Placer mining in the western United StatesPt I General information hand shoveling and ground sluicingBook由 Gardner, E. D. (Eugene Delos), 1885-
出版 1934 -
Placer mining in the western United StatesPt 2 Hydraulicking treatment of placer concentrates and marketing of goldBook由 Gardner, E. D. (Eugene Delos), 1885-
出版 1934 -
Field book of western wild flowersthe ultimate guide to flowers growing west of the Rocky MountainsBook