Campbell Limestone No. 9 is a Heisler - 2 truck it was built for the Kentucky Lumber Co., as #9 by the Heisler Locomotive Works, Erie, PA, in 1923.
It was successively sold to Carolina Tie & Lumber, Santee River Hardwood Co., Campbell Limestone and Vulcan Materials before being donated to the Atlanta Chapter of the NHRS in 1979.
The locomotive is seen today at the Southeastern Railway Museum where it is currently displayed.