25 juin 2019
Albert Everett Wieslander, « Semidense conifers showing mainly young growth with scattered old trees. Species: Pinus ponderosa, Pseudotsuga taxifolia, Abies concolor, Arbutus menziesii, Chamaebatia foliolosa. (Air photo 95-16). », Berkeley Library Digital Collections, ID : 10670/1.p5b774