J. Christopher Haley · Manuel G. Bonilla · Richard F. Meyer · Warren E. Yeend · James J. Lienkaemper · William J. Perry
1983年1月 · U.S. Government Printing Office
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This history of placer mining of the gold deposits of east central Alaska, near the town of Circle, covers its development from 1893 to date and includes a summary of the regional geology and of the gravels of each creek.