Standard Petroleum Refinery, Pittsburg, Pennsylvania c. 1865

"Standard Petroleum Refinery, Pittsburg, Pennsylvania" is a stereoscopic photograph taken by Thomas H. Johnson circa 1865. The image shows a large brick building with multiple windows and loading bays. Several figures are visible, loading barrels onto a rail car in front of the building. This photograph provides a glimpse into the early oil refining industry in the United States, capturing the industrial activity and scale of these operations in the mid-19th century.