National Register of Historic Places in Nevada County
This Carnegie Library, designed by San Francisco architect William Mooser in the Classical Revival style, was built in 1905 with a grant of $15,000 to replace the 1901 the Emmanuel Church Library, a non-denominational library which welcomed both "the Atheist and the Buddhist if such there be."
Some Carnegie Free Libraries in California
Some Other Carnegie Free Libraries in the West
The website Carnegie Libraries of California contains much information about these libraries.