Metallographic examination and optical emission spectroscopy shed light on the origin of a lampshade found in the aftermath of Hurricane Katrina. The steels used for the ring and wire in the frame are typical of those made prior to WWII and the fabrication processes appear to be of a similar timeframe. Tassels on the lampshade were determined to be a more recent alteration and the fabric was found to be cow skin parchment based on DNA testing.

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