Hello Friends: The University of Georgia Map Collection holds about 220,000 air photos covering the state of Georgia. Some 100,000 of those photos have marks on them from their previous life in ASCS. The marks are from 'china markers.' Over the years we have cleaned individual photos as needed using a plastic eraser. That is fairly slow. We now have the money to scan the entire collection and eventually will mount the air photos in a database on the University System of Georgia's Galileo database server. That means I need to clean all the photos fairly quickly. What are the various ways to clean these photos? When I was at Oregon, many, many years ago, they used a chemical on a rag. The problem was the chemical was toxic to humans. I need an easy, quick, safe way to clean the photos. Does such a way exist? What suggestions do you all have? Thanks for any input. I will summarize for the list. Johnnie Sutherland Map Collection University of Georgia Libraries Athens, GA 30602 [log in to unmask]