Final two lectures of Neville's 1964 series

Date (happened)
between 11 December 1964 and 15 December 1964
unresolved
  1. between 11 December 1964 and 15 December 1964 relative · preferred
    Source For Hatching ¶27passage 546400 in nid 1840: 'two lectures left, Friday and next Tuesday'
    Why Class B multi-delivery set; linked deliveries remain separate.
    Reasoning The source lecture was certainly delivered Tuesday 1964-12-08 and explicitly identifies the remaining deliveries as Friday and next Tuesday, yielding 1964-12-11 and 1964-12-15. The event represents both deliveries as a Class B set, so a bounded range records the set without merging either delivery.
Place
Persons
Told / reported
  1. 8 December 1964 estimated
    Source For Hatchingcertain preferred delivery claim on lecture nid 1840
    Reasoning Passage 546400 belongs to lecture nid 1840, whose preserved dateline establishes delivery on 1964-12-08 with certain confidence.