Crown imperial illustration https://www.rawpixel.com/image/2053990/vintage-orange-flower-illustrationView licenseCorona Imperialis, flore pulchre rubente (ca. 1772 –1793) by Giorgio Bonelli. Original from the The New York Public… https://www.rawpixel.com/image/2053989/botanical-illustration-giorgio-bonelliFree Image from public domain licenseT.VI. Tab.81. Corona Imperialis flore pulchre rubente. J.R.H 342.. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7650096/image-plant-flower-vintageFree Image from public domain license