Donkey, Murray Brothers Yarder

Yarder, horizontal, designed & used for pile driving (ULCo. #D-11).

Donkey, Washington Iron Works Steam Yarder #3451

The 3451 Washington Iron Works, Seattle, yarder was built in September of 1922 and worked at the Craig Lumber Company in Philo, CA from 1946 to 1950.

Donkey, Willamette Steam Yarder #4703

This machine was built for the Mendocino Lumber Company. Much improved over the smaller Dolbeer Spool donkey, this yarder has 2 cable drums and could hold a much longer cable. It also has the abiliy to wind the cable back by itself.

Donkey, Washington Iron Works 12x17 Simplex Slackline Yarder, #3643

As steam yarders grew more powerful and could reach greater distances, the ability of the machine to slack the skyline was critical for maintaining productivity.

Donkey, Washington Iron Works #3404 Three-spool Yarder

Washington Iron Works (WIW) Simplex Yarder #3404 is on permanent loan to the Mendocino County Museum from the State of California Department of Forestry. The WIW Yarder was purchased new in the early 1920s by the Mendocino Lumber Co.

Winch, Orten & Steinbrenner Steam

This steam winch was built about 1910 and was typically used for loading and unloading cargo from ships. Not much more is known about this particular winch other than it was found in Fort Bragg in a blackberry patch.

Tractor, Daniel Best Steam

Daniel Best's Steam Tractor #185, now in the Roots of Motive Power Collection, rolled off the assembly line in 1903. The tractor stands 17' 4" to the top of the stack, is 28' long, and 9' 7" wide, weighing 18 tons 800 lbs. with full boiler and tank.

Rail Track Layer, Clyde Iron Works

The weekend of November 8-9, 2003 saw the arrival of the Clyde Track Layer #134, built in November 1923 by Clyde Iron Works of Duluth, Minnesota.

Road Roller, Kelly Springfield Steam Roller


The Kelly Springfield is being restored!! See the project page for more information and a week-by-week overview of the work (with pictures).

Shovel, Bucyrus-Erie 50-B Steam

Mike Mulligan's Steam Shovel Comes to Willits

As a result of an October 19, 1992 Roots of Motive Power acquisition, future generations of Mendocino County's youth will have a better understanding of the venerable steam shovel Mary Anne, which was happily retired to a new life as the heati

Road Roller, Buffalo Springfield Steam Roller

This seven ton steam roller was built by the Buffalo Springfield Roller Company in 1924. It was built to be coal fired with the large, flat coal "bunker" over the front roller.

Mine Train Engine and Ore Cars

The State of California Department of Geothermal Resources has donated a mine train engine and several ore cars to Roots of Motive Power. Thanks to Roots member, Vrain Conley, for arranging for this donation.

Locomotive: Heisler Steam, Bluestone Mining and Smelting

Wheel Arrangement: 0-4-4-0
Trucks: 2
Weight: 47 Tons
Fuel: Oil;Diesel
Length: 35 Feet, 9 Inches
Construction Number: 1351

Locomotive: Baldwin Steam, Mason County Logging Co #7

Wheel Arrangement: 2-6-2 T
Weight: 46 Tons
Tractive Force: 17,000
Fuel: Oil;Diesel
Length: 35 Feet, 6 Inches
Construction Number: 34666

Locomotive: Climax Geared Steam, Holmes Eureka Lumber Co. #4

Wheel Arrangement: 0-4-4-0
Trucks: 2
Weight: 60 Tons
Tractive Force: 26,400
Fuel: Oil;Diesel
Length: 37 Feet, 11 Inches
Boiler: 200 psi

Locomotive: Baldwin Steam, California Western #14

Wheel Arrangement: 2-6-2 T (Prarie)
Weight: 55 Tons
Tractive Force: 18,750
Fuel: Oil;Diesel
Length: 33 Feet, 10 Inches

Locomotive: Lima Shay Geared Steam, Robert Dollar Lumber Co.

Wheel Arrangement: 0-4-4-0,
Trucks: 2
Weight: 50 Tons
Tractive Force: 22,580
Fuel: Oil;Diesel
Length: 41 Feet, 5 Inches
Boiler: 180 psi

Donkey, Willamette 3-Drum Loader, #2139

This steam donkey was built by Willamette Iron and Steel Works of Portland, Oregon in 1923 as C/N 2139 for the Westside Lumber Company in Tuolumne, California.

Engine, Skinner Engine Company Stationary Steam

15 X 16 inch starionary steam engine. The Skinner Engine Co. of Erie, Pennsylvania still manufactures reciprocating steam engines today for a number of industries and has a reputation for quality that is unequaled.

Engine, Golden State and Miners Iron Works Stationary Steam "Siri"

Roots Acquisition

Roots of Motive Power volunteers headed to Santa Rosa in the Fall of 1988 to dismantle and transport to Willits a huge sawmill steam engine. The engine was donated to Roots by Arthur S. Siri Jr., president of Siri General Contractors.

Engine, Skinner Uniflow Steam

The Skinner Uniflow Steam Engine represented the height of efficiency of steam engine design when it was produced in 1926.

Engine, Erie Engine Works Stationary Steam

Purchased in 1985 by Willits Redwood Conpany for future power supply in their sawmill. The engine was removed from the Pacific Paperboard mill in Longview, Washington after a fire destroyed most of the mill.

Engine, Decker Shingle Mill Portable Steam

The Decker Shingle Mill came to Roots from Comptche, California. The engine was made by Joseph Enright Foundry and Machine Shop, San Jose, California, manufacturers of portable steam engines for threshing, sawmills, flour mills and pumping plants.

Engine, Mansfield Portable Steam

Mansfield engines were well-known for their rapid steaming ability, being able to get into operation from a cold start faster than any other boiler-engine combination.

Engine, Porter "New Economizer" Portable Steam

This portable steam engine was used to operate a sawmill in Trinity County, California. The engine was manufactured by the Porter Manufacturing Company of Syracuse New York and was imported to California by their agent, the Joshua Hendy Machine Works of San Francisco.

Engine, Port Huron Portable Steam #6127

Portable steam power units adapted to a variety of work on America's farms, factories, and sawmills, replacing animal power and water power as the prime movers. The steam engine was bolted directly to the top of the boiler shell.

Donkey, California Iron Works Horizontal Spool, Steam

This very early steam donkey was built in Humboldt County by the California Iron Works before the turn of the century. Bull donkeys were used to replace bulls on long skid roads before many logging companies had access to railroad equipment.

Donkey, Marschutz and Cantrell, Vertical Spool, Steam

John Dolbeer of Eureka, California changed logging forever in 1883 when he patented the first spool donkey. These simple, rugged machines were seen for decades in the woods, long after the arrival of more powerful and expensive steam yarders and skidders.

Donkey, Eureka Foundry Horizontal Spool, Steam

This horizontal or side spool donkey was built by the Eureka Foundry Company in 1906 as Construction Number 4929. The first reported use of steam for logging purposes was at Salmon Creek in Humboldt County in 1881 for Dolbeer and Carson.

Crane, Raymond F440 Steam

This Raymond F440 steam crane was built in 1940 as a pile driver and converted to a crane sometime later.

Air Compressor, Imperial Type 10 Duplex

This Ingersoll-Rand Imperial Type 10 Duplex steam-driven air compressor was donated to Roots by Georgia Pacific in 2000. With the closing of the Georgia Pacific mill in Fort Bragg, removal of the compressor became a priority and it was moved to the Roots facility in Willits in 2003.

Brick Making Machine

Little is known about this artifact.

Locomotive Crane, Ohio Steam

Wheel Arrangement: Crane
Weight: 63.5 Tons
Fuel: Oil;Diesel
Length: 25 Feet, 5 Inches
Construction Number: 3786
Maximum Allowable Working Pressure (MAWP): 125 psi

Donkey, Murray Brothers Vertical Spool Steam

Murray Brothers Machine Works of San Francisco was one of the early manufacturers of Dolbeer patent spool donkeys, using one of John Dolbeer's designs of steam logging machinery from 1883. The Dolbeer Spool Donkey was the fIrst steam machinery used in the woods.

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