Brushed metal plaque № 48971

Needles, CA, United States

Von Schmidt State Boundry Monument. This marker commemorates the iron column erected in 1873 at the southernmost tip of the boundary survey line run by Alexey W. Von Schmidt. U.S. astronomer and surveyor. The line dividing Nevada and California was based on preliminary geodetic work by Lieutenant Jo

seph Christmas Ives. Ives determined the Colorado River end of the proposed oblique California-Nevada boundary. Von Schmidt calculated and ran the first complete survey of the boundary. His solar obse

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