My husband and I are serving as missionaries for the Church of Jesus Christ of Latter-day Saints at the Family History Library in Salt Lake City, Utah. We work in the Digital Preservation area and our job is to scan family history books to be prepared for digitizing and putting them on-line. We have just been working with a new donation: records from the early 1800's-forward from the AFGS of NY. It will be a couple of months, possibly, before they show up on-line but you can look for them on familysearch.org. Watch for the "books" tab. There are over 50,000 books from the library on-line so far. I do hope you will find your grandfather's records in what we've processed. Some of the "stories" seem so heartbreaking.
Sister Laurie Thomas