A series of 5 maps displaying the locations of gold and gems in Northern California, along with historical maps of settlements.
Map 1 highlights gems and minerals in the northwest, including the 1851 gold region.
Map 2 focuses on gold and gems in the northeast part of Northern California, featuring the Feather and Yuba Rivers.
Map 3 depicts gold and gems in the southwest of Northern California, including 1850 mining districts.
Map 4 showcases gold and gems in the southeast part of Northern California, including miscellaneous district details.
The final map presents the Mother Lode mineral belt and mineral districts.