Locke is 20-mile air distance due south of City of Sacramento.
(b) "1915年，加州南部核桃谷一带华人民工聚居的地方被一场大火烧毁了，他们希望能建一座有家乡特色的自己的城镇。 * * * 20世纪初期，加州的法律禁止外国移民拥有土地。于是，这些华人找到拥有大片土地的美国人乔治.劳克（George Locke），请求在他的地面上兴建一座华人城镇。劳克同意了他们的要求，双方签订了合约。1920年，一个独具风格的 '乐居' 镇建起来了。"
Locke, California https://en.wikipedia.org/wiki/Locke,_California
(an unincorporated community; "On Oct 7, 1915, the Chinatown of nearby Walnut Grove was destroyed and burned after an accidental fire * * * The land was leased from George Locke as California law at the time forbade the selling of farmland to Asian immigrants by the California Alien Land Law of 1913")
Clearly it is not 核桃 "谷" but grove.
(c) "现在，'乐居' 镇已经列入美国传统文化保护项目，成为华裔美国人农业社区历史的一部分。"
Locke Historic District, Sacramento County, California. National Park Service, undated. https://www.nps.gov/nr/travel/as ... storic-District.htm
("The Locke Historic District, also known as the town of Locke, California, was built in 1915 by Chinese immigrants from Heungshan [Xiangshan] County (modern day Zhongshan), in Guangdong Province, China")
Heungshan is the spelling for Cantonese pronunciation of 香山.
(d) The last photo has a sign that reads "勝利館 Locke Ness." The English name is a wordplay on Loch Ness https://en.wikipedia.org/wiki/Loch_Ness
(" is the second largest Scottish loch by surface area at 22 sq mi (56 km2) after Loch Lomond, but due to its great depth, it is the largest by volume in the British Isles. Its deepest point is 755 ft (230 m), making it the second deepest loch in Scotland after Loch Morar")