Marysville & Northern Railway Company 0-4-0 steam locomotive number 2 at Sedro Woolley, Washington circa 1932. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, logging locomotive.

Builder photo of right side of Construction Number 1474 showing Mark H. Brown Lumber Company 36 Ton, Two Truck Heisler Geared Steam Locomotive Number 4 at Erie, Pennsylvania, February 1923.This locomotive was used for logging near Fontana, North Carolina. Photograph by Schauble.

Builder photo of Construction Number 1194 showing right side of Manley, Moore Lumber Company 50 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in February 1910. This locomotive was used for logging near Fairfax, Washington. Photograph by Schauble.

Manitou & Pike's Peak Cog Railway steam locomotive number 3 at Pike's Peak, Colorado, circa 1950. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, passenger train.

Builder photo of Construction Number 1160 showing right side of Manistee Mill Company 36 Ton Two Truck Heisler Geared Steam Locomotive Number 9 at Erie, Pennsylvania in May 1909. This locomotive was used on the Manistee and Repton Railroad at Manistee, Alabama. Photograph by Schauble.

Builders photo of Construction Number 1599 showing right side of Malahat Logging Company, Limited 70 Ton, Three Truck Heisler Geared Steam Locomotive Number 4 at Erie, Pennsylvania, May 1939. This locomotive was used for logging near Port Renfrew, British Columbia. Photograph by Schauble.

Builder photo of Construction Number 1391 showing right side of Madison Lumber Company 32 Ton, Three Truck Heisler Geared Steam Locomotive Number500 (?) at Erie, Pennsylvania, April 1919. This locomotive is bit of a mystery as seen in the photo it is unlettered but only with Number 500. Madison Lumber Company is reported to have done logging near Quimby, Mississippi. Photograph by Schauble.

Builder photo of Construction Number 1253 showing right side of Mac-A-Mac Corporation 42 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, June 1912. This locomotive was used for logging near Brandreth Lake, New York. Photograph by Schauble.

Builder photo of Construction Number 1174 showing right side of Lyndon Lumber Company 36 Ton Two Truck Heisler Geared Steam Locomotive Number 4 at Erie, Pennsylvania in November 1909. This locomotive was used in logging near Wingate, Mississippi. Photograph by Schauble.

Builder photo of Construction Number 1145 showing left side of Lyndon Lumber Company 42 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in October 1908. This locomotive was used for logging at Wingate, Mississippi. Photograph by Schauble.