Builders photo of Construction Number 1564 showing right side of J. Robert Bazley, Contracting Engineer 42 Ton Two Truck Heisler Geared Steam Locomotive Number 1564 at Erie, Pennsylvania, July 1928. This locomotive was used for stripping rock at coal mines and the company was located at Pottsville, Pennsylvania. Photograph by Schauble.

J. Neils Lumber Steam Locomotive Number 7 locomotive, Shay, at Klickitat, Washington, 1956.

Builder photo of Construction Number 1291 showing right side of Issaquena Lumber Company 26 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, January 1914. This locomotive was used for logging near Issaquena, Mississippi. Photograph by Schauble.

Builder photo of Construction Number 1115 showing right side of Interstate Lumber Company 22 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania in February 1907. This locomotive has been noted as being used for logging at Bokoma, Oklahoma but this cannot be confirmed. Photograph by Schauble.

Builders photo of Construction Number 1594 showing right side of International Shoe Company 32 Ton, Two Truck Heisler Geared Steam Locomotive Number 4 at Erie, Pennsylvania, November 1929. This locomotive was used for logging near Marlinton, West Virginia with the bark of the trees used for tanning leather. Photograph by Schauble.

Builder photo of Construction Number 1549 showing right side of International Lumber Company 55 Ton, Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, March 1927. This locomotive was used for logging near International Falls, Minnesota. Photograph by Schauble.

Photo of interior of Heisler Locomotive Works showing spare parts kept in stock at Erie, Pennsylvania. Photograph by Schauble.

Photo of interior of Heisler Locomotive Works showing spare parts kept in stock at Erie, Pennsylvania. Photograph by Schauble.

Photo of interior of Heisler Locomotive Works showing spare parts kept in stock at Erie, Pennsylvania. Photograph by Schauble.

Photo of interior of Heisler Locomotive Works erecting building with locomotives in various stages of construction at Erie, Pennsylvania. Photograph by Schauble.