Identifier: Text-S28048
Title: Geologic guidebook of the San Francisco Bay counties; history, landscape, geology, fossils, minerals, industry, and routes to travel
Creator(s): Jenkins, Olaf P.; Averill, Charles V.
Identifier: Text-S30201
Title: Geologic guidebook along Highway 49, Sierran Gold Belt : The Mother Lode country
Creator(s): Jenkins, Olaf P.; Averill, Charles V.