Walnut Creek California Tunnel Real Photo Postcard

This postcard features an advertisement for a significant land subdivision in Walnut Creek, California, offering 2000 Acres from the G.G.C. Land Co. The sign's indication of 3 Miles from Oakland highlights its proximity to a growing urban center, a key selling point for early 20th-century developments in the San Francisco Bay Area. An early automobile exiting a rustic entryway, accompanied by figures in period attire, suggests the scene likely dates to the 1900s or 1910s, reflecting the emerging importance of personal transportation in accessing and developing such properties.