Common name(s): Olympic Mountain Milkvetch
- Wikipedia. Online encyclopedia entry (if defined).
- Google images. Web search for photographs.
- GRIN. Taxonomical details, with common names, distribution, and synonyms.
- The Plant List. Taxonomical lookup
Links for Astragalus cottonii
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments.
- Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.