John W. Sharp established Walnut Grove in 1851 as a river port between Sacramento and San Francisco. Chinese immigrants arrived early, many of them driven to the delta after their previous homes and towns were burned. Sharp rented land to the Chinese community -- a pattern that would define immigrant life in the delta for generations. After Sharp's death in 1880, his heirs sold the town to Alex Brown and his mother Agnes. Brown proved to be a staunch supporter of the Chinese and Japanese communities, providing financial backing to Asian businessmen and renting land at reasonable rates. The Brown family became deeply woven into Walnut Grove's commercial life, operating a general store, a hotel, an asparagus packing house, and the Bank of Alex Brown. Under their stewardship, Walnut Grove's Chinatown grew into a thriving commercial center serving hundreds of Chinese, Japanese, and Filipino agricultural laborers across the delta region.

Walnut Grove's Chinese community carried the internal geography of Guangdong province across the Pacific. Residents from Heungshan County -- modern-day Zhongshan, on the east side of the Pearl River -- outnumbered those from the Sze Yup districts of Xinhui, Taishan, Kaiping, and Enping by nearly ten to one. The two groups spoke different dialects and could not easily communicate. They organized themselves into tongs -- voluntary associations built around shared home districts, family names, and native languages. The tongs provided mutual aid and protection to newly arriving immigrants, but they also competed for influence within the community. The most powerful was the Bing Kong Tong Society, a branch of the San Francisco organization that managed labor relationships, regulated gambling, provided mail and banking services, and helped workers find employment. At its height, the Walnut Grove branch had over 400 active members from across the delta. It even arranged for the bones of the deceased to be sent back to China for burial -- a final return that many living immigrants could not make.

Exhausted by repeated arson, Walnut Grove's Chinese residents eventually built simple, large, inexpensive wooden structures -- each costing roughly $800 at the time -- designed to be rebuilt quickly if destroyed again. Meanwhile, Japanese immigrants settled the delta to work the asparagus farms that dominated the reclaimed swampland. The first known Japanese-owned business was a noodle shop that opened in 1896. By World War I, Japanese families were well established, and the community had its own district, its own Buddhist church founded in 1926, and its own local hero: Kamajiro Hotta, an influential farmer the town called the Asparagus King. The Japanese and Chinese districts existed side by side, connected by the shared economy of delta agriculture but separated by language, custom, and the particular discrimination each group faced under California law.

Walnut Grove sits at the natural corner of the Central Valley, where the flat agricultural floor stretches over 60 miles to the north and south-southeast with unobstructed line of sight. Broadcast engineers recognized the location's potential in the early 1960s. The first major tower, the KXTV/KOVR/KCRA Tower, went up in 1962, standing 1,548 feet tall and dominating the skyline for over two decades. In 1985, it was joined by even taller structures. The KXTV/KOVR Tower reaches 2,048 feet -- one of the tallest constructions in the world. The Channel 40 Tower stands 1,996 feet, and the Hearst-Argyle Tower hits an even 2,000 feet. From their perch above the delta, these towers beam television signals into the Sierra foothills and across the entire valley floor. For pilots, the cluster is both a landmark and a warning: the guy wires extend hundreds of feet from each tower base, creating a zone where low-altitude flight requires particular vigilance.

Walnut Grove has never been large. Its 2020 census population stood at 1,452 -- smaller than many city blocks in Sacramento, just 30 miles upriver. Documentary photographer Pirkle Jones captured the town in a 1961 photo essay that treated it as a portrait of a place already aware of its own passing. And the town has indeed contracted: the Chinese and Japanese districts that once bustled with laborers during harvest season are quiet now, their populations thinned by the same forces that emptied rural communities across America. But Walnut Grove persists in ways the census does not measure. The Buddhist church still holds its annual Obon festival. The broadcast towers still hum with signal. The Sacramento River still bends past the old port, carrying water and sediment through the same delta channels that Chinese laborers dredged and diked more than a century ago. The town that began as a river crossing between Sacramento and San Francisco remains exactly that -- a small, stubborn point on a very old route.