Ink signatures of the mathematician, physicist, astronomer Francois Arago, "F. Arago," the chemist and physicist Joseph Louis Gay-Lussac, "Gay-Lussac," and the chemist Louis Jacques Thenard, "Thenard," on an off-white 6 x 3 sheet also signed by a few others. Matted with images of the three to an overall size of 15.75 x 11.75. In fine condition, with scattered light creasing. Pre-certified PSA/DNA.
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