Simpson Investment Company

Previously owned by St. Regis Corporation,[3] the mill on the shore of Commencement Bay was acquired by Simpson in 1985 and sold to RockTenn in 2014.

Significant portions of the original 1968 Redwood National and State Parks and its 1977 expansion were former Simpson Timber Company land.

When it closed in July 2015 it was the last logging railroad operations in the continental United States,[12] and dates back 120 years.

[13] In January 2019, Green Diamond Resources leased the railroad's remaining 10 miles, plus sidings, to the Peninsular Railway and Lumbermen's Museum, a locally based 501(c)3 non-profit organization.

The all-volunteer group is advancing plans to operate several Simpson locomotives and other rolling stock for tourist trains designed to highlight the significant role lumbering and the railroad played in developing the economies of the local area, the Olympic Peninsula, and the entire Pacific Northwest.