English naturalist and author (1809–1882) whose book explaining his theories of evolution, On the Origin of the Species by Means of Natural Selection (1859), takes a place among the most influential texts in the history of scientific thought. Ink signature, “Ch. Darwin,” on an off-white 3.75 x 1 slip, clipped from the closing of a letter, with “Yours very sincerely,” written above the signature in another hand. “Ch.” in signature a few shades lighter than remainder of signature, some light toning and soiling to upper portion of slip from adhesive on reverse, just slightly touching signature, otherwise fine condition. Pre-certified PSA/DNA and RR Auction COA.
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