[Map of the great Venango oil basin]

Exhibited: "Beneath Our Feet: Mapping the World Below" organized by the Norman B. Leventhal Map Center at the Boston Public Library, 2017-2018.

Title provided by cataloger.

Shows the basin spanning the towns of Venango, Warren and Crawford.

Although West Virginia is the second state in the country for coal production, crude oil has also been drilled for since the mid-19th century. This late 19th-century hand-drawn map illustrates Pennsylvania's Venango County oil basin, and shows locations of wells throughout three counties in the northwestern part of the state.