A stratigraphic-geochemical study of the Troutdale Formation and Sandy River Mudstone in the Portland basin and lower Columbia River Gorge (pdx.edu)
On the morning of July 23, 1948, Griffith was discovered unconscious in the lobby at the Knickerbocker Hotel in Los Angeles, where he had been living alone. He died of a cerebral hemorrhage at 3:42 PM on the way to a Hollywood hospital.