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|All Authors / Contributors:||
George Horatio Derby
|Notes:||Relief shown by hachures.
Shows drainage, land ownership, etc.
"S. Ex. Doc. No. 47, Part 2nd, 1st Sess., 31st Cong."
|Description:||1 map ; 54 x 43 cm.|
|Cartographic Mathematical Data:||Scale [1:285,120]. 1 in. to 4 1/2 miles; (W 122Â°00Ê¹--W 120Â°35Ê¹/N 39Â°40Ê¹--N 38Â°15Ê¹).|
|Responsibility:||surveyed & drawn by order of Genl. Riley, commandg. 10th Military Dept. by Lieut. Derby, Topl. Engrs., September & October, 1849.|