- Inventory of Washington Minerals Part I Nonmetallic Minerals. Valentine, Grant M.
Bulletin No. 37. Division of Mines and Geology,
Department of Conservation and Development, State of Washington: GPO, (1949).
(Available at Washington State Department of Printing General Store $9.98 or the Washington State Library )
- Inventory of Washington Minerals Part II Metallic Minerals. Huntting, Marshall T.
Bulletin No. 37. Division of Mines and Geology,
Department of Conservation and Development, State of Washington: GPO, (1960).
(Available online from the Washington Department of Natural Resources)
- GEMS and MINERALS Of WASHINGTON. 3rd ed. Ream, Lanny.
Renton WA.: JACKSON MOUNTAIN PRESS, 1994.
(Still in print. You can order it from Amazon.com)
- Mineral sites of Snohomish County, Washington Claude, Ray
Sedro-Woolley, WA (623 Fruitdale Rd., Sedro Woolley 98284) : GeoTrek, c1995
1st ed
(Currently out of print. Available at the Washington State Library)
- Paleontology of the marine tertiary formations of Oregon and Washington
Weaver, Charles E. (Charles Edward)
Seattle, University of Washington Press, 1942
(Currently out of print. Available at the Washington State Library)
Several good publications are available online at the Washington Department of Natural Resources Division of Geology and Earth Resources. (All files are in PDF format)