Auriferous Gravels and Gold Lodes of the Weaverville Quadrangle California by J.S. Diller & Henry Ferguson - Originally Published in 1912 by the USGS as a series on Economic Geology, this scarce and rarely seen publication provides little known information on the Placer Mines and Lode Mines of Weaverville Quadrangle. The cover shows gold actually found from this area in recent years. Now back in Print by Sylvanite publishing.