Wasanelder Once.
As far as I know, the society of those days had stated as follows.
I think that the information which you are searching for is probably also alike.
"In 1884 he caused to be incorporated the Watch Tower Bible and Tract Society, intended by him to continue the work of the harvest after his earthly career was finished, and which is yet carrying it on.
This great work of gathering together Christian people can be designated in no other way than as a harvest, and fully meets that which was foretold by the Lord Jesus. This work, which has covered a period of about forty-five years, has never had for its purpose the forming of any arrangement by which Christians join anything. Its purpose and work has been and is to enlighten men and women concerning the great divine plan, and by this means of proclaiming the message of truth has gathered together Catholics and Protestants, Christians from all denominations in all parts of the earth. These Christians are not the followers of Pastor Russell, but are followers of the Lord and qotce to feed upon the food that the Lord has provided for them through his wise and faithful servant,
(The Harp of God, 800,000 Edition, Written in 1921 by Joseph F. Rutherford. par. 421, 422)
"During the period of time since 1874 there has been a great gathering together of Christian people from different quarters of the earth, without regard to creed or denomination. These have come from both Catholic and Protestant churches and outside of all churches. They have not sought members, but they have been drawn together for the study of God's Word, and they love the Lord and love his cause above everything else...
While this work has been going on, the Lord has been gathering together the truly consecrated Christians without regard to creed or denomination, and he has designated them as "wheat". This great work of gathering together Christian people can be designated in no other way than as a harvest, and clearly means that which was foretold by the Lord Jesus. It has never been the purpose of these Christians to assemble themselves as Bible Students to induce any one to join them; in fact, they have no membership roll."
(The Harp of God, 3,710,000 Edition, Written in 1921 by Joseph F. Rutherford. par. 412, 414)
http://www.strictlygenteel.co.uk/harp/harp9.html"During the period of time since 1874 there has been a great gathering together of Christian people from different quarters of the earth, without regard to creed or denomination. These have come from both Catholic and Protestant churches, and from outside of all churches. They have not sought members, but they have drifted together for the study of God's Word, and they love the Lord and love his cause above everything else. ...
This great work of gathering together Christian people can be designated in no other way than as a harvest, and fully means that which was foretold by the Lord Jesus. It has never been the purpose of these Christians to assemble themselves as Bible Students in order to induce anyone to join them; in fact, they have no membership roll."
(Creation, 1,100,000 Edition, Written in 1927 by Joseph F. Rutherford. pp. 320-322 (pp. 299-301, in 1,645,000 Edition))
http://www.strictlygenteel.co.uk/creation/creation12.html
Well, if you search the word "organization" in materials of those days, it is written as follows.
The Watch Tower 1917 January 15 p.22 "The Watch Tower Bible and Tract Society is the greatest corporation in the world, because from the time of its organization until now the Lord has used it as his channel through which to make known the glad tidings."
http://www.quotes-watchtower.co.uk/god_s_organisation.html
And another information:
My website. (What pastor Russell said)
http://godpresencewithin.web.fc2.com/pages/jw/hesaid.html
possible