Waldemar Lindgren†—USGS—The occurrence of a basic hydrous phosphate of iron, probably dufrenite, near Anacostia, DC.
(Charles) Whitman Cross†—USGS—Large land-slides in Colorado.
William John McGee†—Bureau of Ethnology—The formation of arkose.
Waldemar Lindgren†—USGS—The Nevada city special folio.
† GSW Founder
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