Friends hear Neville teach the law before 1959
Date (happened)
1 January 1959
unresolved
1 January 1959
estimated · probable · preferred
before 1 January 1959
bound
Why
Collective teaching-history bound; existing rows remain untouched.
Reasoning
The source states only an upper boundary for the collective pre-1959 teaching period. Encoding before 1959-01-01 preserves that meaning and does not pretend the boundary itself was a lecture date.