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.

Builders photo showing right side of Electric Shovel Coal Corporation 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 8 at Erie, Pennsylvania, 1928. This locomotive was used for mining 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 9 at Erie, Pennsylvania, 1928. This locomotive was used for mining coal near Clinton, Indiana. Photograph by Schauble.

Builder photo of Construction Number 1546 showing right side of Elk River Mill and Lumber Company 28 Ton, Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania, February 1927. This locomotive was used for logging near Falk, California. Photograph by Schauble.

Builder photo of Construction Number 1451 showing right side of 42 inch gauge Emory River Lumber Company 32 Ton, Two Truck Heisler Geared Steam Locomotive Number 10 at Erie, Pennsylvania, March 1921. This locomotive was used for logging near Gobey, Tennessee. Photograph by Schauble.

Builder photo of Construction Number 1171 showing right side of Emporia Manufacturing Company 42 Ton Two Truck Heisler Geared Steam Locomotive Number 10 at Erie, Pennsylvania in October 1909. This locomotive was used in logging near Emporia, Virginia. Photograph by Schauble.

Builder photo of Construction Number 1186 showing right side of Emporia Manufacturing Company 32 Ton Two Truck Heisler Geared Steam Locomotive Number 11 at Erie, Pennsylvania in January 1910. This locomotive was used in logging near Emporia, Virginia. Photograph by Schauble.

Builder photo of Construction Number 1186 showing right side of Emporia Manufacturing Company 32 Ton Two Truck Heisler Geared Steam Locomotive Number 11 at Erie, Pennsylvania in January 1910 while loaded on flat car Cleveland, Cincinnati, Chicago and St. Louis Railway (CCC&StL) 22001. This locomotive was used in logging near Emporia, Virginia. Photograph by Schauble.

Builder photo of Construction Number 1217 showing right side of Emporia Manufacturing Company 32 Ton Two Truck Heisler Geared Steam Locomotive Number 14 at Erie, Pennsylvania in March 1911. This locomotive was used in logging near Emporia, Virginia. Photograph by Schauble.

Builder photo of Construction Number 1289 showing right side of Emporia Manufacturing Company 32 Ton Two Truck Heisler Geared Steam Locomotive Number 15 at Erie, Pennsylvania, October 1913. This locomotive was used in logging near Emporia, Virginia. Photograph by Schauble.