Cartography of California. 193 



MAPS ISSUED BY STATE MINING BUREAU. 



1880. Map of mud volcanoes of the Colorado Desert. Scale, 

 10,000 ft. to 1 in. Accompanying 2d Report State Min- 

 ing Bureau, 1880-82, pp. 227-240. 



San Bernardino County, Sec. 15, T. 11 S., R. 13 E. 



1883. Sketch map of California and Nevada, showing the 

 locality of principal borax fields. Accompanying 3d Re- 

 port State Mining Bureau, 1883. 



1886. Sketch map of San Diego County, showing the portion 

 of mines and minerals referred to in the 6th Report State 

 Mining Bureau, 1886. 



1886. Map of Julian district, San Diego County. Accom- 

 panying 6th Report State Mining Bureau, 1885-86, part 

 1, p. 82. 



1888. Map of the Grass Valley mining district, Nevada 

 County, showing the principal mines; by M. Attwood. 

 Scale, 30 chains to 1 in. Accompanying 8th Report State 

 Mining Bureau, 1888, p. 780. 



1890. Geological map of Trinity County; by William P. 

 Miller. Accompanying 10th Report State Mining Bu- 

 reau, 1890. 



1890. Map of the mines and locations in the vicinity of the 

 Sierra Buttes; compiled by L. P. Goldstone. Accom- 

 panying 10th Report State Mining Bureau, 1890. 



1890. Map of the Ophir and Diuican Hill mining district, 

 Placer County; by J. B. Hobson. Accompanying 10th 

 Report State Mining Bureau, 1890. 



1890. Geological map of Pla6er County; by J. B. Hobson. 

 Accompanying 10th Report State Mining Bureau, 1890. 



1890. Geological map of the Iowa Hill mining district, 

 Placer County ; by J. B. Hobson. Scale, 1,500 ft. to 1 in. 

 Accompanying 10th Report State Mining Bureau, 1890. 



