1923. 2011-05-19T14:45:25Z. 2011-05-19T14:45:25Z. Dept. of the Interior, U.S. Geological Survey. English. Public. California, Humbolt County (Calif.), Siskiyou County (Calif.), and Trinity County (Calif.).
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1922. 2011-05-19T14:47:51Z. 2011-05-19T14:47:51Z. Dept. of the Interior, U.S. Geological Survey. English. Public. California and Siskiyou County (Calif.).
1922. 2011-05-18T19:35:29Z. 2011-05-18T19:35:29Z. Dept. of the Interior, U.S. Geological Survey. English. Public. California, Del Norte County (Calif.), and Siskiyou County (Calif.).