https://github.com/davepinch/pinchy.cc/blob/master/content/topics/places/us-national-parks/north-cascades-national-park/north-cascades-national-park.md
Geology and Mineral Resources of the Northern part of the North Cascades National Park, Washington Reconnaissance geology of the 500-square-mile wilderness north of the Skagit River, and the mineral survey that was made before it became a park. 1972
The North Fork Nooksack River rises at the Nooksack Cirque east of Mount Shuksan within the western part of North Cascades National Park in central Whatcom County.
