I want to know the answer to the following question:
Who presided over Zion's Watch Tower Tract Society in 1881?
All the background I'm provided with is that "In 1881, Zion's Watch Tower Tract Society was presided over by William Henry Conley, and in 1884, Charles Taze Russell incorporated the society as a non-profit business to distribute tracts and Bibles.". Is that enough to answer the question?
Answer: yes