YES – The Watchtower 9/15/1950 p. 327 God’s Blessed Family
others are mere babes who must be looked after and cared for by more mature brothers and sisters.
NO – The Watchtower 1/1/1951 p. 31 Questions From Readers
So in using modern speech in addressing the congregation the word brothers is sufficient, including all present, and makes unnecessary the longer address of “brothers and sisters.”
YES (two weeks later!) – The Watchtower 1/15/1951 p. 37 Producing the Yearbook of Jehovah’s Witnesses
It is a thrilling report of a spiritual family of brothers and sisters, a family that is unified by God’s spirit…