Date (happened)
c. 0 (probable)
"over the years", told in Christmas, The Redeeming Message (nid 1807)
Told / reported
December 1963 (possible)
sole delivery claim on lecture nid=1807: 1963-12 exact/possible, state=weak -- derived from Christmas falling 'next Wednesday' and post-Kennedy-assassination Q&A content, but the derivation notes itself flag a conflict with Neville's stated age of fifty-nine.
Persons
He speaks of years of listeners taking his lectures down on tape, in shorthand and in longhand, and hopes one of them will compile the narrative.