Neville's fifteen-year association with his West Coast friends
Date (happened)
between 1948 and 1963
probable
between 1948 and 1963
conclusion · probable
Why
dc1-agreement-20261004, pm-actor-551 (PM 8702)
Reasoning
1 claim, no conflict: 1948–1963 (passage:544766).
between 1948 and 1963
estimated · probable · preferred
Reasoning
Neville states his other West Coast friends 'have known me here on the West Coast for the last fifteen years'; the lecture is dated 1963-12-13 (certain), so subtracting fifteen years places the start of the association at circa 1948, spanning to the 1963 lecture date. 'Fifteen years' is a round figure, not a precise count, so this is written as a between/circa range rather than an exact date.
Told / reported
13 December 1963
conclusion
Why
dc1-agreement-20261004, pm-actor-551 (PM 8702)
Reasoning
1 claim, no conflict: 1963-12-13 (node:1798).
13 December 1963
estimated
Reasoning
Neville recounts this association during this lecture, whose delivery date (1963-12-13) is certain by both catalog and an independent transcript chrome-dateline read; the told date inherits that certainty.