Arrowhead Springs Hotel, 1915, by JW Bledsoe.  The “arrowhead” landslide for which the region is named is easily visible on the upper left side of the image. This is Arrowhead Springs Hotel #3, it was destroyed by wildfire in 1938 and replaced in 1939 (the 1939 version survives to the present, but is abandoned).

More information on the Hotel is here: https://www.ci.san-bernardino.ca.us/about/history/arrowhead_springs_hotels.asp

And here: http://www.architecturaldigest.com/story/hotels-arrowhead-112008

Image courtesy Jim Smart at CSUSB, from an 8×10 negative.