Builder photo of Construction Number 1259 showing right side of Charles Estes 23 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania, August 1912. This locomotive was used in logging near Sledge, Mississippi. In an enlargement of the photograph it appears the builders plate shows construction number 1260. Photograph by Schauble.

Builder photo of Construction Number 1279 showing right side of 36 inch gauge Chemical and Helvetia Railroad 32 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, May 1913. This company was controlled by the Buckhannon Chemical Company and the locomotive was used for logging near Selbyville, West Virginia. The wood was used to make charcoal, acetate of lime and wood alcohol. Photograph by Schauble.

Builder photo of Construction Number 1348 showing right side of 36 inch gauge Chemical and Helvetia Railroad 32 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, September 1916. This company was controlled by the Buckhannon Chemical Company and the locomotive was used for logging near Selbyville, West Virginia. The wood was used to make charcoal, acetate of lime and wood alcohol. Photograph by Schauble.

Builder photo of Construction Number 1387 showing right side of Chicago Mill and Lumber Company 22 Ton, Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, January 1919. This locomotive was used for logging near Helena, Arkansas. Photograph by Schauble.

Builders photo of Construction Number 1565 showing right side of Cia Maderera de Durango (Durango Lumber Company) 80 Ton Three Truck Heisler Geared Steam Locomotive Number 4 at Erie, Pennsylvania, August 1928. This locomotive was used for logging near El Salto, Mexico. Photograph by Schauble.

Builder photo of Construction Number 1555 showing right side of Clearwater Timber Company 90 Ton, Three Truck Heisler Geared Steam Locomotive Number 91 at Erie Pennsylvania, December 1927 This locomotive was used for logging near Lewiston, Idaho. Photograph by Schauble.

Builders photo of Construction Number 1574 showing right side of Clemons Logging Company 90 Ton, Three Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, November 1928. This locomotive was used for logging near Melbourne, Washington. Photograph by Schauble.

Builder photo of Construction Number 1232 showing right side of Columbia River Lumber Company, Limited 62 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, August 1911. This locomotive was used for logging near Golden, British Columbia. Photograph by Schauble.

Builder photo of Construction Number 1243 showing right side of Columbia River Lumber Company, Limited 60 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania, January 1912. This locomotive was used for logging near Golden, British Columbia. Photograph by Schauble.

Builder photo of Construction Number 1244 showing right side of Comox Logging and Railway Company 62 Ton Two Truck Heisler Geared Steam Locomotive Number 5 at Erie, Pennsylvania, January 1912. This locomotive was used for logging near Headquarters, British Columbia. Photograph by Schauble.