25 juin 2019
Albert Everett Wieslander, « From point near Bullards Bar Road. Association of Ponderosa pine, Douglas fir, and Madrone. Understory of Cornus nuttallii. Occasional Tanbark oak, Sugar pine and White fir. Ground cover of sparse Chamaebatia foliolosa. », Berkeley Library Digital Collections, ID : 10670/1.dp8ubn