I hate to be difficult but.......
""Zion’s Watch Tower Tract Society was formed on February 16, 1881, with W. H. Conley as president and C. T. Russell as secretary and treasurer"
"The speaker is Charles Taze Russell, the first president of the Watch Tower Society, and the production is the "Photo-Drama of Creation."
When did the name change occur? When did it go from being ZION'S Watch Tower Tract Society to Watch Tower Society?
When one looks at the difference in the name it's possible for both of theses statements to be TRUE!