25 juin 2019
Richard C.P. Wilson, « Looking south from Middle Bartlett Mt., across chamise chaparral ridges and knobcone pine thickets to typical Lake County. North slope chaparral, woodland types containing Quercus wislizenii, Quercus chrysolepis, Umbellularia californica, Arbutus menziesii and Arctostaphylos glandulosa as dominants. », Berkeley Library Digital Collections, ID : 10670/1.99e5lt