Port San Luis Obispo Avila Beach Pismo California Steam Ship 1911 Real Photo Postcard
The S.S. *Oleum*, an early 20th-century oil tanker, was launched in 1904 by Union Iron Works for the Union Oil Company of California. Identified by the "U" on its funnel, this vessel was among the first purpose-built tankers to operate along the Pacific coastline, playing a crucial role in transporting crude oil and refined products from California's rapidly expanding oil fields to markets along the West Coast.
Captured here at Port San Luis, California, the postcard depicts a key operational hub for this maritime oil transport. Port San Luis developed into a vital deep-water port, equipped with an oil wharf and extensive storage facilities, serving as the primary maritime outlet for oil piped from California's Central Valley fields. Its activity, facilitated by vessels like the *Oleum*, was instrumental in California's emergence as a major oil-producing state during the early modern industrial era.
Captured here at Port San Luis, California, the postcard depicts a key operational hub for this maritime oil transport. Port San Luis developed into a vital deep-water port, equipped with an oil wharf and extensive storage facilities, serving as the primary maritime outlet for oil piped from California's Central Valley fields. Its activity, facilitated by vessels like the *Oleum*, was instrumental in California's emergence as a major oil-producing state during the early modern industrial era.
