Date (happened)
before 1966
(possible)
qualifying source passages 546994; telling lecture nids 1857
Told / reported
1966
delivery claim d0 on lecture nid 1857 ('Nevilles Thoughts If Leaving Permanently'), 1966 exact-to-year/certain, Neville explicitly says 'this world, 1966'
Neville tells the audience he is going away, that he bought a roundtrip ticket with an undated return, and that those on his mailing list will hear where he is and when he returns.