Engraved copper plates from which 10 of the illustrations of Wilson's American Ornithology were printed, namely pls. 1-5, 7-9 of vol. 1 and pls. 10-11 of v. 2. 26 x 33 cm. These were engraved by Alexander Lawson and are accompanied by a carbon of the letter of appreciation of the Academy to the donor.

This collection consists of three medallions, 2 small medallion storage boxes, and three notes accompany the medallions. The medals were given to the Academy of Natural Sciences in Philadelphia by outside institutions including the International Congress of Americanists, The Wisconsin Academy of Sciences, Arts, and Letters, and the Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique.

This collection consists of three medallions, 2 small medallion storage boxes, and three notes accompany the medallions. The medals were given to the Academy of Natural Sciences in Philadelphia by outside institutions including the International Congress of Americanists, The Wisconsin Academy of Sciences, Arts, and Letters, and the Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique.