Neville's first childhood vision
Date (happened)
between 1910 and 1920
unresolved
between 1910 and 1920
bound · possible
Why
The lecture itself carries no delivery date (ASR-derived transcript, no human witness), so no field_told claim is added.
Reasoning
Neville gives no more specific temporal marker than 'as a boy'; with his birth in February 1905, this bounds the vision to a rough childhood window, here taken as roughly ages 5-15 (1910-1920), with no finer resolution possible from the text.