Ms Anne Barr, director of the West Pittston Library, made connections with me through this blog. We talked on the phone today. Briefly it seems that grandfather, William R. Harshaw, was quite involved with the library's affairs, as reflected in the minutes of the library association. She will be sharing information on his involvement with me and I will pass it on (hence the "I").
The library website also provides access to digitized copies of some issues of the Pittston Gazette. The first mention of W.R.Harshaw is on the occasion of the first use of the new church building, February 26, 1892. He preached twice. A mystery though--why is he described as of Columbus, Ohio? Perhaps a correspondent's mistake, because he was of New York City then.