Builder photo of Construction Number 1064 showing left side of 42 inch gauge R.W. Potter Company 20 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania in July 1902. This date is in question as the photo shows snow on the ground. The locomotive was used at Thetford Mines in Quebec, Canada. Photograph by Schauble.

Builder photo of Construction Number 1257 showing right side of Salmon Creek Lumber Company 42 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania, July 1912. This locomotive was used for logging near Kelletville, Pennsylvania. Photograph by Schauble.

Builder photo of Construction Number 1461 showing right side of 36 inch gauge Sandpoint Lumber and Pole Company 40 Ton, Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, July 1922. This locomotive was used for logging near Troy, Montana. Photograph by Schauble.

Builder photo of Construction Number 1538 showing right side of Santa Fe Northwestern Railway 70 Ton, Three Truck Heisler Geared Steam Locomotive Number 104 at Erie, Pennsylvania, October 1926. This railroad was controlled by the White Pine Lumber Company and the locomotive was used for logging near Bernalillo, New Mexico. Photograph by Schauble.

Builder photo of Construction Number 1435 showing right side of Sawyer-Goodman Lumber Company 47 Ton, Two Truck Heisler Geared Steam Locomotive Number 12 at Erie, Pennsylvania, June 1920. This locomotive was used for logging near Marinette, Wisconsin. Photograph by Schauble.

Builder photo of Construction Number 1539 showing right side of Shaw-Bertram Lumber Company 80 Ton, Three Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania, November 1926. This locomotive was used for logging near Kirk, Oregon. Photograph by Schauble.

Builders photo of Construction Number 1586 showing right side of Sherwood-Templeton Coal Company 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, August 1929. This locomotive was used for mining coal near Dugger, Indiana. Photograph by Schauble.

Builders photo of Construction Number 1587 showing left side of Sherwood-Templeton Coal Company 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, August 1929. This locomotive was used for mining coal near Dugger, Indiana. Photograph by Schauble.

Builder photo of Construction Number 1240 showing right side of Shofner and Hutton Lumber Company 18 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, December 1911. This locomotive was used for logging near Morgan City, Mississippi. Photograph by Schauble.

Builder photo of Construction Number 1241 showing right side of Shubuta and South Western Railroad 32 Ton Two Truck Heisler Geared Steam Locomotive Number 6 at Erie, Pennsylvania, January 1912. This railroad was controlled by the Brownlee Lumber Company and was used for logging near Shubuta, Mississippi. Photograph by Schauble.