25 juin 2019
Albert Everett Wieslander, « Looking southwest at northerly slope with woodland-grass type. Trees are Douglas and Valley oaks and Digger pine with occasional Cercocarpus betulaefolius, Lonicera subspicata, Ceanothus cuneatus, Rhamnus crocea var. ilicifolia and Rhus diversiloba. », Berkeley Library Digital Collections, ID : 10670/1.hdt7yz