Mining locations located by red numerals. We do not have key to those numbers. Julian District is shown on submap because of the number of locations. Note the number of oil companies in the Coachilla Valley, presumably all dry holes. Submap: Julian District. MS note: 327363. Prime meridian: GM. Relief: no. Graphic Scale: Miles. Projection: Cylindrical. Printing Process: Lithography. Verso Text: MS notes: San Diego Co. (Mining Map) 1902 $7.50 $175.
Type
image
Format
image/jpeg
Extent
1 map ; printed col. ; 34 x 90 cm., sheet 72 x 108 cm.
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