This copy of Thomas C. Eyton’s Monograph on the Anatidae, from the library of the University of Illinois and scanned for the marvelous Biodiversity Heritage Library, is autographed by the author–not an unusual thing to encounter in the world of bird books.
What is unusual, though, is the fact that after adding his John Hancock to the title page, Eyton for some reason found it necessary to explain, parenthetically, that this was the “autograph of the Author.”
I have no explanation.