Milwaukee Road steam locomotive 1494, a Milwaukee Road Shops Class I5a, at Bellingham, Washington in lower yard; photograph sequence TRWahl0430-0429. Other subject categories: Locomotive-Steam, Locomotive-Switcher

Milwaukee Road steam locomotive 1494, a Milwaukee Road Shops Class I5a, at Bellingham, Washington switching cars at industries; location uncertain. Other subject categories: Locomotive-Steam, Locomotive-Switcher

Milwaukee Road steam locomotive 1494, a Milwaukee Road Shops Class I5a, at Bellingham, Washington switching cars at industries; location uncertain. Other subject categories: Locomotive-Steam, Locomotive-Switcher

Builder photo of Construction Number 1114 showing right side of Mining, Logging and Timber Company 52 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania in January 1907. This company never existed and was applied to this locomotive for dealer J.G. Smith at Seattle, Washington. It was later sold to the Pacific Logging and Timber Company at Dungeness, Washington. Photograph by Schauble.

Builder photo of Construction Number 1161 showing right side of Mississippi, Arkansas and Western Railway 23 Ton Two Truck Heisler Geared Steam Locomotive Number 11 at Erie, Pennsylvania in June 1909. This locomotive was controlled by the Bliss-Cook Oak Company and was used to haul logs near Blissville, Arkansas. Photograph by Schauble.

1.5 inch scale model of a Heisler geared locomotive built for display at the 1915 Panama-Pacific International Exposition at Erie, Pennsylvania. Photograph by Schauble.

1.5 inch scale model of a Heisler geared locomotive built for display at the 1915 Panama-Pacific International Exposition with Heisler General Manager George L. Swabb to the right at Erie, Pennsylvania. Photograph by Schauble.

1.5 inch scale model of a Heisler geared locomotive built for display at the 1915 Panama-Pacific International Exposition with Heisler General Manager George L. Swabb at Erie, Pennsylvania. Photograph by Schauble.

1.5 inch scale model of a Heisler geared locomotive truck posed next to an actual truck with Heisler General Manager George L. Swabb at Erie, Pennsylvania. Photograph by Schauble.

Builder photo of Construction Number 1251 showing right side of Moline Lumber Company 20 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, May 1912. This locomotive was used for logging near Malvern, Arkansas. Photograph by Schauble.