The information on this page was obtained from many sources that I will be listing here.
Adams, Kramer. Logging Railroads of the West. Superior Publishing Company. Seattle, WA. 1961.
Bohn, Dave & Rodolfo Petschek. Kinsey Photographer Vol 3: The Locomotive Portraits. Black Dog & Leventhal Publishers, Inc. New York, NY. 1984.
Conrad, J. David. The Steam Locomotive Directory of North America: Volume 2-Western United States and Mexico. Transportation Trails. Polo, Illinois. 1988.
Durrant, A.E. The Mallet Locomotive. Arco Publishing Company, Inc. New York. 1975.
Glaab, John. The Brown Book of Brass Locomotives, Third Edition. Chilton Book Company. Radnor, Pennsylvania. 1994.
Hungry Wolf, Adolf. Railroad Camp. Canadian Caboose Press. Skookumchuck, B.C. 1992.
Koch, Michael. Steam & Thunder in the Timber: Saga of the Forest Railroads. World Press Inc. Denver, CO. 1979.
Labbe, John T. & Peter J. Replinger. Logging to the Salt Chuck. Northwest Short Line. Seattle, WA. 1990.
Labbe, John T. & Vernon Goe. Railroads in the Woods. Oso Publishing Company. Arlington, WA. 1995.
LeMassena, Robert A. Articulated Steam Locomotives of North America Vol 1. Sundance Publications. Silverton, CO. 1979.
LeMassena, Robert A. Articulated Steam Locomotives of North America Vol 2. Sundance Publications. Denver, CO. 1991.
Nock, O.S. Encyclopedia of Railroads. Galahad Books, New York, NY. 1977.
Replinger, Peter J. Puget Sound and Snoqualmie Valley R.R. Chatham Publishing Company. Burlingame, CA. 1970.
Spencer, James. Rayonier. Heimburger House Publishing Company. Forest Park, Illinois. 1999.
Sulzer, Elmer G. Ghost Railroads of Tennessee. Indiana University Press. Bloomington, IN. 1998.
Thompson, Dennis Blake. Logging Railroads in Skagit County. Northwest Short Line. Seattle, WA. 1996.
Turner, Robert D. Logging By Rail: The British Columbia Story. Sono Nis Press. Victoria, B.C. 1997.
Turner, Robert D. Vancouver Island Railroads. Sono Nis Press. Victoria, B.C. 1997.
Wurm, Ted. Mallets on the Mendocino Coast: Caspar Lumber Company Railroads and Steamships. Timber Times. Hilsboro, OR. 1998.
Beuter, Arthur J. "Lumber Railroads of the Weyerhaeuser Timber Company." Pacific Railway Journal. March 1957.
Caviglia, Gary. "Sierra Railroad #38 - Weyerhaeuser Timber Company #4." Narrow Gauge & Short Line Gazette. March/April 1999.
Caviglia, Gary. "Rayonier (ex-Sierra RR) #38 Details. Narrow Gauge & Short Line Gazette. May/June 1999.
Crossley, Rod. "Photo Archive from the Collection of Rod Crossley." Timber Times. Issue 23.
Cummings, John. "Six Little Baldwin Tank Mallets." Tall Timber Short Lines. Spring 2001.
Ferrell, Mallory Hope. "Two Mighty Midget Mallets: Part 1: On the Uintah Railway." Narrow Gauge & Short Line Gazette. May/June 1999.
Ferrell, Mallory Hope. "Two Mighty Midget Mallets: Part 2: On the Sumpter Valley Railway." Narrow Gauge & Short Line Gazette. July/August 1999.
Ferrell, Mallory Hope. "Two Mighty Midget Mallets: Part 3: On the International Railways of Central America." Narrow Gauge & Short Line Gazette. September/October 1999.
Giessel, J. Harold. "Baldwin's 2-4-4-2 Mallet." Model Railroader. March 1962.
Hansen, Martin E. "Moving A Legendary Mallet." Timberbeast. Spring 1986.
Olah, Dan. "Mallets in the Woods." Railfan & Railroad. May 1986.
Reid, Bob. "New Zealand's Unique Mallet." Narrow Gauge and Short Line Gazette. September/October 1989.
Replinger, Peter J. "Diesel-Era Water Cars." Tall Timber Short Lines. Fall 2000.
Schmelzer, Ken. "Logging Mallets." Narrow Gauge and Short Line Gazette. September/October 1975.
Schmelzer, Ken. "Logging Mallets part 2." Narrow Gauge and Short Line Gazette. November/December 1975.
Schmelzer, Ken. "Logging Mallets part 3." Narrow Gauge and Short Line Gazette. January/February 1976.
Schmelzer, Ken. "Logging Mallets part 4." Narrow Gauge and Short Line Gazette. May/June 1976.
Schmelzer, Ken. "Logging Mallets part 5: A Gallery." Narrow Gauge and Short Line Gazette. July/August 1976.
Schmelzer, Ken. "Logging Mallets part 6." Narrow Gauge and Short Line Gazette. November/December 1976.
Schmelzer, Ken. "Logging Mallets part 7." Narrow Gauge and Short Line Gazette. March/April 1977.
Schmelzer, Ken. "Logging Mallets part 8." Narrow Gauge and Short Line Gazette. July/August 1977.
Schmelzer, Ken. "Logging Mallets part 9." Narrow Gauge and Short Line Gazette. January/February 1979.
Schmelzer, Ken. "Logging Mallets part 10: A Mallet Gallery." Narrow Gauge and Short Line Gazette. May/June 1979.
Schmelzer, Ken. "Logging Mallets part 11." Narrow Gauge and Short Line Gazette. November/December 1979.
Schmelzer, Ken. "Logging Mallets part 12." Narrow Gauge and Short Line Gazette. March/April 1980.
Taubeneck, John A. "Logging Mallets."
"The Sounder," official newsletter of the Northwest Railway Museum, Snoqualmie, WA.
The Weyerhaeuser Company Archives
"U Gets Old Logging Engine." The Seattle Post-Intelligencer. 9 Jan 1962.
"University to lose historical locomotive." UW Daily. March 10, 1971. p. 3