Date (happened)
between 12 February 1963 and 18 February 1963
(probable)
passage 529600 (lecture nid 1081), 'he was here last week', relative to the lecture's certain 1963-02-19 delivery date
Told / reported
19 February 1963
delivery claim on lecture nid=1081, catalog #129 and independently recovered chrome header both give 1963-02-19