I didn't note whether I saw the will book in print or on microfilm, but it was on a research trip to the Salt Lake LDS library, so most definetly one form or the other. Rachel Abercrombie's will is on pg. 87 and "Miss Lauvinda Abercrumbie" is on pg. 21 & 22.I bet you could get photocopies from the courthouse.
I did make note of books titled Clayton Co. GA Marriage Books A & B compiled by Ancestors Unlimited 1980 and History of Clayton Co. GA 1821-1893 compiled by Ancestors Unlimited 1983.Linda