Builders photo showing right side of Electric Shovel Coal Corporation 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 7 at Erie, Pennsylvania, 1928. This locomotive was used for mining coal near Clinton, Indiana. Photograph by Schauble.

Photo of right side of Electric Shovel Coal Corporation 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 6 at Clinton, Indiana. This locomotive is seen with one of the large shovels used for mining coal near Clinton, Indiana. Photograph by Schauble.

Photo of right side of Electric Shovel Coal Corporation 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 6 at Clinton, Indiana. This locomotive is seen with hopper cars loaded with coal near Clinton, Indiana. Photograph by Schauble.

Builders photo showing right side of Electric Shovel Coal Corporation 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 5 at Erie, Pennsylvania, 1928. This locomotive was used for mining coal near Clinton, Indiana. Photograph by Schauble.

Builder photo of Construction Number 1284 showing right side of Elbe Lumber and Shingle Company 52 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, June 1913. This locomotive was used for logging near Elbe, Washington. Note that axle on the front truck is raised up to show flexibility of the truck. Photograph by Schauble.

Builder photo of Construction Number 1526 showing right side of E.L. Bruce Company 36 Ton, Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, February, 1926. This locomotive was used for logging near Oak Grove, Louisiana. Photograph by Schauble.

Builders photo of Construction Number 44 showing right side of E.I. DuPont de Nemours and Company 75 ton, 0-6-0 Heisler Fireless Steam Locomotive Number 2 at Erie, Pennsylvania, November 1938. This locomotive was used at Belle, West Virginia. Photograph by Schauble.

Builder photo of Construction Number 1335 showing right side of E.E. Overton 32 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, May 1916. This locomotive was used for logging near Orting, Washington. Photograph by Schauble.

Builder photo of Construction Number 1309 showing right side of Edward G. Anderson 40 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, January 1915. This locomotive was used for logging near Dunkle, Pennsylvania. Photograph by Schauble.

Builder photo of Construction Number 1155 showing right side of E.C. Shevlin Timber Company 42 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in February 1909. This was used for logging out of Ostrander, Washington. Photograph by Schauble.