Been working on taking the 9/11 exhibit down today. One of the artifacts is a badly damaged boot from an unknown firefighter. When I took it out of the case today, this footprint remained. The dust is from the World Trade Center. While it will have to be cleaned in a week or so, I found it very moving to think that when the exhibit is picked up Friday to head back to New York, a brave firefighter's footprint will stay behind in our library ...Several readers of the post suggested ways to preserve the print, rather than clean it off the display pedestal. I have a call in to Debra to see what she's come up with. Twelve years have not dulled the pain of 911.