Only the state of Washington claimed more logging railroads than the state of Oregon. The rich Pacific Northwest rain forests held vast stands of thick, native timbers that were largely of the Douglas-fir variety. There were other harvested varieties, however, such as (but not limited to) Red Alder, Western Red Cedar, and Lodgepole Pine, Sitka Spruce, and Western Hemlock. In his book, "Logging Railroads Of The West" published in 1961, Kramer Adams highlighted many of Oregon's operations. This effort required an extraordinary amount of time and effort since, as the author notes, many companies never bothered to leave a paper trail of their operations.