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.

Builder photo of Construction Number 1145 showing right side of right 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.

Photo of 30 inch gauge Lukens Steel Company 36 Ton, Two Truck Heisler Geared Steam Locomotive Number 17 at Coatesville, Pennsylvania with a string of slag cars. Note the outside frame trucks.

Builder photo of Construction Number 1358 showing right side of 30 inch gauge Lukens Steel Company 36 Ton Two Truck Heisler Geared Steam Locomotive Number 16 at Erie, Pennsylvania, May 1917. This locomotive was used in a steel mill at Coatesville, Pennsylvania. The locomotive is loaded on Boston and Albany flat car B&A 16264 for delivery. Also note the outside frame trucks. Photograph by Schauble.

Builder photo of Construction Number 1467 showing right side of Louisell Pine and Hardwood Company 40 Ton, Two Truck Heisler Geared Steam Locomotive Number 4 "Sam Greene, Jr." at Erie, Pennsylvania, October 1922. This locomotive was used for logging near Bernice, Louisiana. Photograph by Schauble.

Builder photo of Construction Number 1222 showing right side of Louisell Lumber Company 36 Ton, Two Truck Heisler Geared Steam Locomotive Number 6 at Erie, Pennsylvania, February 1911. This locomotive was not delivered and the locomotive was sold to the A.G. Little Lumber Company. Photograph by Schauble.

Builder photo of Construction Number 1260 showing right side of Louise Lumber Company 36 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, August 1912. This locomotive was used in logging near Sledge, Mississippi. Photograph by Schauble.

Builder's photo of Longview Portland & Northern Railway Baldwin 0-6-0 steam locomotive number 70 (construction number 5755) at Philadelphia, Pennsylvania, circa 1924. Photo by Baldwin Locomotive Works, J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, switching locomotive, builder's photo.

Builder photo of Construction Number 1315 showing right side of L.N. Dantzler Lumber Company 47 Ton Two Truck Heisler Geared Steam Locomotive Number 7 at Erie, Pennsylvania, August 1915. This locomotive was used for logging near Bond, Mississippi. Photograph by Schauble.

Builder photo of Construction Number 1245 showing right side of 36 inch gauge L.H. Roberts Company 20 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, January 1912. This locomotive was used for logging near Headquarters, British Columbia. Photograph by Schauble.

Builders photo showing right side of Lehigh Navigation Coal Company 55 Ton, Two Truck Heisler Geared Steam Locomotive Number 116 at Erie, Pennsylvania, 1930's. This company was formed on March 1, 1930 and took over the coal mining properties of the Lehigh Coal and Navigation Company. This locomotive was used for mining coal near Summit Hill, Pennsylvania. Photograph by Schauble.

Builder photo of Construction Number 1552 showing right side of Lehigh Coal and Navigation Company 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 117 at Erie, Pennsylvania, September 1927. This locomotive was used for coal mining near Summit Hill, Pennsylvania. Photograph by Schauble.

Builder photo of Construction Number 1553 showing right side of Lehigh Coal and Navigation Company 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 116 at Erie, Pennsylvania, October 1927. This locomotive was used for coal mining near Summit Hill, Pennsylvania.

Builders photo of Construction Number 1612 showing left side of Lehigh Coal and Navigation Company 55 Ton, Two Truck Heisler Geared Steam Locomotive Number 113 at Erie, Pennsylvania, May 1932. This locomotive was used for mining coal near Summit Hill, Pennsylvania. Photograph by Schauble.

Builders photo of Construction Number 1582 showing right side of Lehigh Coal and Navigation Company 55 Ton, Two Truck Heisler Geared Steam Locomotive Number 110 at Erie, Pennsylvania, June 1929. This locomotive was used for mining coal near Summit Hill, Pennsylvania. Photograph by Schauble.

Photo of Construction Number 1588 showing left side of Lehigh Coal and Navigation Company 55 Ton, Two Truck Heisler Geared Steam Locomotive Number 102 at Summit Hill, Pennsylvania. The locomotive is working four air side dump cars that are being loaded with rock that is being stripped above the coal seam.

Builders photo showing right side of Lehigh Coal and Navigation Company 55 Ton, Two Truck Heisler Geared Steam Locomotive Number 106 at Erie, Pennsylvania, 1930. This locomotive was used for mining coal near Summit Hill, Pennsylvania. Photograph by Schauble.

Builders photo of Construction Number 1588 showing right side of Lehigh Coal and Navigation Company 55 Ton, Two Truck Heisler Geared Steam Locomotive Number 102 at Erie, Pennsylvania, July 1929. This locomotive was used for mining coal near Summit Hill, Pennsylvania. Photograph by Schauble.

Builder photo of Construction Number 1366 showing right side of Larkins-Green Logging Company 53 Ton, Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, October 1917. This locomotive was used for logging near Blind Slough, Oregon. Photograph by Schauble.

Builder photo of Construction Number 1393 showing right side of Lamb-Gray Lumber Company 24 Ton, Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, April 1919. This locomotive was used for logging near Valley Park, Mississippi. Photograph by Schauble.

Builder photo of Construction Number 1318 showing right side of Lamar Lumber Company 75 Ton Three Truck Heisler Geared Steam Locomotive Number 5 at Erie, Pennsylvania, January 1916. This locomotive was used for logging near Clyde, Mississippi. Photograph by Schauble.

Builder photo of Construction Number 1506 showing right side of Lake Shore Stone Products Company 7 Ton, One Truck Heisler Geared Steam Locomotive Number 7 at Erie, Pennsylvania, August 1924. This is the only known one truck Heisler built. The Lake Shore company went into receivership in 1926 and at some point the locomotive was returned to Heisler at Erie. The use of this locomotive is thought to have been in road construction. The Lake Shore company operated a limestone quarry near Sandusky, Ohio. Photograph by Schauble.

Builders photo of Construction Number 1407 showing right side of Lake Providence, Texarkana and Western Railway 40 Ton, Two Truck Heisler Geared Steam Locomotive Number 410 at Erie, Pennsylvania, September 1919. This company was cotrolled by E. Sondheimer Company and this locomotive was used for logging near Sondheimer, Louisiana. Photograph by Schauble.

Builder photo of Construction Number 1412 showing right side of Lake End Lumber Company 32 Ton, Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, January 1920. This locomotive was used for logging near Lake End, Louisiana. Photograph by Schauble.

Builder photo of Construction Number 1167 showing right side of La Rue Mining Company 60 Ton Two Truck Heisler Geared Steam Locomotive Number 5 at Erie, Pennsylvania in August 1909. This locomotive was used in mining iron ore at Ironton, Minnesota. Photograph by Schauble.

Builder photo of Construction Number 1434 showing right side of L.A. Cowan Lumber Company 40 Ton, Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania, May 1920. This locomotive was used for logging near Reba, Mississippi. The name L.A. Cowan, Jr. was one of the officers of the company. Photograph by Schauble.

Builders photo of Construction Number 1404 showing right side of L.A. Cowan Lumber Company 40 Ton, Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, August 1919. This locomotive was used for logging near Stephenson, Mississippi. Photograph by Schauble.

Builders photo showing right side of Knickerbocker Portland Cement Company Two Truck Heisler Geared Steam Locomotive Number 4 at Erie, Pennsylvania, undated. This locomotive was used for mining limetone near Hudson, New York. The locomotive gauge and weight are unknown. Photograph by Schauble.

Builder photo of Construction Number 1512 showing right side of 36 inch gauge Kitchen Lumber Company 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 7 at Erie, Pennsylvania, January 1925. This locomotive was used for logging near Fontana, North Carolina. Note the outside frame trucks. Photograph by Schauble.