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Books about Nanavira:
The Hermit of Bundala - Biography of Ñanavira Thera and reflections on his life and work by Bhikkhu Hiriko Ñanasuci and Michael Rae (Jan 5, 2014)
The Tragic, The Comic and The Personal: Selected Letters of Nanavira Thera by Unknown
Clearing the Path: Writings of Nanavira Thera (1960-1965) by Nanavira Thera (1987)
Notes on Dhamma (1960-1965) [Paperback]  (Author) Nanavira Thera (2009)
Wiki information Nanavira:
Ñāṇavīra Thera was an English Theravāda Buddhist monk, ordained in 1950 in Sri Lanka. He is known as the author of Notes on Dhamma, which were later published by Path Press together with his letters in one volume titled Clearing the Path.