Date (happened)
between April 1964 and 10 April 1964
(probable)
passage 546120 (nid 1834): 'Another windfall this week...'
Told / reported
10 April 1964
delivery claims on lecture nid 1834: catalog #218 and an independent chrome-scraped dateline '4/10/64', both agreeing 1964-04-10.