Photo of Construction Number 1402 showing right side of Wisconsin-Alabama Lumber Company 75 Ton, Three Truck Heisler Geared Steam Locomotive Number 4 at Erie, Pennsylvania, July 1919. This locomotive was used for logging near Sylacauga, Alabama. Photograph by Schauble.

Builder photo of Construction Number 1390 showing right side of Wisconsin-Alabama Lumber Company 63 Ton, Three Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania, February 1919. This locomotive was used for logging near Sylacauga, Alabama. Photograph by Schauble.

Builder photo of Construction Number 1372 showing right side of Wisconsin-Alabama Lumber Company 47 Ton, Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania,April 1918. This locomotive was used for logging near Sylacauga, Alabama. Photograph by Schauble.

Builder photo of Construction Number 1187 showing right side of Wisconsin Logging and Timber Company 60 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania in January 1910. This locomotive was used in logging near Stella, Washington. Photograph by Schauble.

Builder photo of Construction Number 1165 showing right side of Winston-Dear Company 23 Ton Two Truck Heisler Geared Steam Locomotive Number 46 at Erie, Pennsylvania in August 1909. This locomotive was used in stripping iron ore mines at Hibbing, Minnesota. Photograph by Schauble.

Photo showing left front of Wilson, Luther and Wilson 37 Ton, Two Truck Heisler Geared Steam Locomotive Number 6 with a train of logs near Luther, Michigan. Photograph by Schauble.

Builder photo of Construction Number 1324 showing right side of 36 inch gauge Wilderness Lumber Company 36 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, April 1916. This locomotive was used for logging near Nallen, West Virginia. Photograph by Schauble.

Photo of Construction Number 5001 showing cab interior of Wickwire Spencer Steel Company 60 ton Heisler Diesel Electric Locomotive at Buffalo, New York, undated.

Photo of Construction Number 5001 showing right rear of Wickwire Spencer Steel Company 60 ton Heisler Diesel Electric Locomotive at Buffalo, New York, undated.