St. Francis Receiving the Stigmata (1887) angel illustration by Sir Edward Coley Burne-Jones. Original public domain image… https://www.rawpixel.com/image/10103555/image-person-art-skyFree Image from public domain licenseNieuport 28C.1, vintage airplane image. Original public domain image from The Smithsonian Institution. Digitally enhanced by… https://www.rawpixel.com/image/10103391/photo-image-rose-plant-handsFree Image from public domain license