This photo is from Railroads in the Woods, Howell North Books, Pg 246. Climax Builder No. 1638
Climax No 4 of the Eagle Gorge Logging Railway out of Eagle Gorge, Washington, in Sept 1955. The last true railroad logging show in the state of Washington. The railroad would end operation in 1955 and this engine was scrapped the following year. (Albert Farrow).