The company traces its history back to 1850 when Thomas Douglas Stimson started logging in Michigan. After moving west to the Pacific Northwest in the 1880s, the family purchased timberlands across the region and established mills and other businesses in the
Puget Sound area. Miller had been asked by Charles S. Stimson to move to Oregon to head family's business in Oregon. The company sold a property to
Metro in 2008 in the
Chehalem Mountains that was turned into
Chehalem Ridge Nature Park. In 2020, the company's mill at Gaston was fined for air pollution. The Christmas tree for
Pioneer Courthouse Square in Portland is often donated by the company, including in 2021 and 2022. ==Operations==