Of course we want documents related to other participants in the Watch Tower movement. We found a tract published by B. W. Keith. We'll quote it in full in volume 3. We found a handwritten biography written by one of the earliest colporteurs. We will quote portions of it in volume 2. If you read volume 1 of Separate Identity you saw bits of letters written by J. C. Sunderlan. We have a portion of J. H. Patons diary. These are not regular printed publications. They're harder to find, and but give us insight into Watch Tower history in ways printed material does not.
Items that may seem insignificant to you may add to our research in unexpected way. A letter to Paton printed in the 1913 World's Hope came our way. It changed everything we knew about an early adherent. We're rewriting a section of a chapter destined for vol 2.
Never think anything is irrelevant.