- This page from Wilderness Connect of the Univerity of Montana has visitor information and links to high-quality interactive maps.
- The United States Congress designated the Mount Baker Wilderness in 1984 and it now has a total of 119,966 acres.
- Cottonwood Island Wildlife Area Unit (wdfw.wa.gov)
The Cottonwood Island Unit is a unique forested property that is representative of a historic habitat type that would have been more widespread along the lower Skagit River Valley. It provides valuable mature cottonwood forest habitat for a variety of forest birds and raptors, primarily buteos and eagles. The remnant of Cottonwood Slough also provides off-channel habitat for salmonids during certain times of the year and has been evaluated for potential habitat restoration projects.