This book (see further down) is from the time when the Watchtower was strongly discouraging marriage and the bearing of children.
This is the flyer from the St. Louis Convention (1941) where the book, Children, was introduced and highlighted. You can see Judge Rutherford, the second president of the Watchtower Society, at the microphone in the inset box:
Read the pages from the book Children below to understand what the Society was teaching about marriage and children in the 1940s. (Scroll down to see the cover of the book and the cover page.)