https://westernchanfellowship.org/about-the-western-chan-fellowship/lineage-of-the-teachers/chan-master-john-crook/obituary-of-john-crook-by-dharma-drum-mountain/
Obituary for Chan Master John Crook by Dharma Drum Mountain
A True Pillar of Chan Buddhism in the West: Remembering the late Dr John Crook, obituary by the Sangha of Dharma Drum Mountain
dharma drum mountainchan masterjohn crookobituary