Just over a year before that disaster my father-in-law was a passenger on that very same ship. At some point after it sank he came across his old receipt. He hadn't meant to keep it. He had simply forgotten to throw it away. If he had rediscovered it on, say, 26th September 1994 he might well have tossed it onto the recycling pile. Now he treasures it as a memorial of the disaster and as a reminder of how uncomfortably close he came to being a part of it.
Who knows, perhaps one day he might donate it to Sweden's Maritime Museum? If he does decide to do this it will be preserved by archivists and curators with the same care as that devoted to a rare mediaeval manuscript or a priceless painting. This is because the receipt forms an intimate link to a moment of history. This mundane little thing is something to which we can all relate. It is therefore far more effective than the large stone monuments that have been erected to commemorate the disaster. It's a tiny, fragile paper memorial to all those people who had the misfortune to travel on the MS Estonia just under one year and two months after my dear father-in-law.