Some 26,000 vintage photographs discovered in a disused Indiana house provide a unique look at the history of the state’s limestone industry. The pictures, donated by Indiana Limestone Co. to the Indiana Geological Survey (IGS) at Indiana University, are currently being cataloged and preserved through a short-term project managed by the survey. The IGS is actively seeking funding to support this important work.

The collection dates from the early to mid-1900s. It illustrates Indiana limestone quarries, mills and building sites across the country. The photographs showcase the prized stone’s legacy in building some of the nation’s most iconic buildings, as well as many structures in southern Indiana.