“Papilionidae: ornithoptera and papilio: Ornithoptera Brookeana Wallace and Papilio idaeoides gray.” Page 14. W. C. Hewitson del et Lithograph 1855. Hullmandel & Walton, printers. Collections of and digitalized by the Smithsonian Libraries. In the public domain due to age. via https://www.biodiversitylibrary.org/item/46120#page/14/mode/1up” Papilionidae: 3,4; Papilio dioxippus. 5; Papilio dioxippus. 6. Papilio Euryleon.” Page 18. W. C. Hewitson del et Lith 1855. Hullmandel & Walton, printer. Collections of and digitalized by the Smithsonian Libraries. In the public domain due to age. via https://www.biodiversitylibrary.org/item/46120#page/18/mode/1up” Papilionidae: Papilio III; 7. Papilio Wallace; 8. Papilio Onesimus.” W. C. Hewitson del et Lith 1855. Hullmandel & Walton, printers. Collections of and digitalized by the Smithsonian Libraries. In the public domain due to age. via https://www.biodiversitylibrary.org/item/46120#page/22/mode/1up
“From a composite helio-chrome, made by Mr. Ives.” Page 458. Herschel. Plate 11. A. Hoen & Company, Lithocaustic, Baltimore. Collection of and digitalized by the Smithsonian Libraries. In the public domain. via https://archive.org/details/annualreportofbo1901smit/page/n457
Yellow butterfly. ca. 1890. Oil and graphite. Collection of the Yale University Art Gallery, New Haven. Image Courtesy of the Yale University Art Gallery. In the public domain in the United States because it was published before January 1, 1924. via https://commons.wikimedia.org/wiki/File:Yellow_Butterfly_by_Albert_Bierstadt.jpeg
“A sprig of redcurrants with an elephant hawk moth, a ladybird, a millipede and other insects.” 1657. Oil on copper. Image courtesy Sothebys. In the public domain in the United States because the artist has been dead over 70 years. via
“Duroia sp. and assorted insects.” 1705. Hand colored copper engraving. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Duroia_sp00.jpg