A Bouquet of Flowers in a Crystal Vase. Original public domain image from The MET Museum https://www.rawpixel.com/image/7726479/public-domain-image-from-the-metFree Image from public domain licenseHugo van der Goes Painting the Portrait of Mary of Burgundy by Wilhelm (Guillaume) Koller https://www.rawpixel.com/image/9184727/image-portrait-paintings-public-domain-phoenix-viennaFree Image from public domain licenseMeeting between Emperor Wen and Fisherman Lü Shang by Attributed to Kano Takanobu https://www.rawpixel.com/image/9613989/image-china-ancient-japanese-emperor-meetingFree Image from public domain licenseCase (Inrō) with Design of Flowering Cherry Trees Beside Winding River (obverse); Maple Trees in Autumn (reverse) https://www.rawpixel.com/image/12490899/photo-image-art-pattern-goldFree Image from public domain license