So anyway, I was watching Ken Burns's "The Civil War" the other night, and it mentioned that immediately after the war, the market for photos of soldiers and battlefields completely collapsed. To make ends meet, countless war photographers sold thousands and thousands of glass plate negatives to be used in greenhouses, where the sun quickly burned off their images. It's awful to think of how much historic record was lost. Kind of like how the English used ground up Egyptian mummies to make paper and bogus medicine.