Builder photo of Construction Number 1521 showing right side of Pike County Collieries Company 36 Ton, Two Truck Heisler Geared Steam Locomotive Number 4 at Erie, Pennsylvania, July 1925. This locomotive was used for mining coal near Oakland City, Indiana. Photograph by Schauble.

Builder photo of Construction Number 1166 showing right side of Pittsburg Iron Ore Company 60 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania in September 1909. This locomotive was used in mining iron ore at Mountain Iron, Minnesota. Photograph by Schauble.

Builder photo of Construction Number 1178 showing right side of Pittsburg Iron Ore Company 60 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in December 1909. This locomotive was used in mining iron ore at Mountain Iron, Minnesota. Photograph by Schauble.

Builder photo of Construction Number 1426 showing right side of Poinsett lumber and Manufacturing Company 47 Ton, Two Truck Heisler Geared Steam Locomotive Number 6 at Erie, Pennsylvania, February 1920. This locomotive was used for logging near Trumann, Arkansas. Photograph by Schauble.

Builder photo of Construction Number 1359 showing right side of Pritchard-Wheeler Lumber Company 26 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, April 1917. This locomotive was used for logging near Wisner, Louisiana. Photograph by Schauble.

Builders photo of Construction Number 1394 showing right side of Pritchard-Wheeler Lumber Company 36 Ton, Two Truck Heisler Geared Steam Locomotive Number 101 at Erie, Pennsylvania, May 1919. This locomotive was used for logging near Wisner, Louisiana. Photograph by Schauble.

Builder photo of Construction Number 1164 showing right side of P.V. Railroad 32 Ton Two Truck Heisler Geared Steam Locomotive Number 3 "Susie" at Erie, Pennsylvania in June 1909. It is not known what P.V. Railroad stands for but this locomotive was controlled by the Hamilton Pitcher Company, notice the logo on the tender of an "H" over a water pitcher. This locomotive was used in logging near Napavine, Washington. Photograph by Schauble.

Builder photo of Construction Number 1442 showing right side of 36 inch gauge Queens Run Refractories Company 40 Ton, Two Truck Heisler Geared Steam Locomotive Number 5 at Erie, Pennsylvania, January 1921. This locomotive was used for mining clay for fire bricks near Queens Run, Pennsylvania. Photograph by Schauble. Photograph by Schauble.

Builder photo of Construction Number 1175 showing right side of Quinault Lumber Company 60 Ton Two Truck Heisler Geared Steam Locomotive Number 2 "Chief" at Erie, Pennsylvania, November 1909. This locomotive was used in logging near Raymond, Washington. Photograph by Schauble.

Builder photo of Construction Number 1428 showing right side of Ransom-Benedict Company 47 Ton, Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, March 1920. This locomotive was used for logging near Clifty, Tennessee. Photograph by Schauble.