Signal board recovered from Cairo's pilot house. Copper wires ran to the engine room to work the brass bell. A horse shoe was found nailed to the bottom of the signal board, presumably for good luck, however it was nailed upside down letting all of the luck run out.
Wood, board. L 91.4, W 28.7, TH 4.5 cm
Vicksburg National Military Park , VICKC 1493