Christmas Tree (1902) by J. Ottman Lithographic Company. Original from Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/1232779/vintage-christmas-tree-illustrationFree Image from public domain licenseThe Adoration of the Shepherds by L'Ortolano (Giovanni Battista Benvenuti) (1512–died after 1527). Original from The… https://www.rawpixel.com/image/1232895/the-adoration-the-shepherds-lortolanoFree Image from public domain licenseChristmas card depicting olive branches from The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Picture… https://www.rawpixel.com/image/556788/olive-branch-christmas-cardFree Image from public domain license