East Gate, Clark & Sumner, Standard Petroleum Refinery, Pittsburg, Pennsylvania c. 1865

"East Gate, Clark & Sumner, Standard Petroleum Refinery, Pittsburg, Pennsylvania" is a stereograph image by Thomas H. Johnson, taken around 1865. The image captures a view of the refinery's East Gate, showcasing brick buildings with tall cylindrical structures, likely oil storage tanks, against a backdrop of rolling hills. This photograph offers a glimpse into the early days of the oil industry and the rapid industrialization of Pittsburgh. The use of the stereoscopic format, popular in the mid-19th century, adds depth and realism to the scene, inviting viewers to experience the industrial landscape of the time.