Rainbow Obstacle (Hindernis Regenbogen) (1911) print in high resolution by Moriz Jung. Original from the MET Museum.… https://www.rawpixel.com/image/2942310/free-illustration-image-rainbow-artFree Image from public domain licenseRainbow Obstacle (Hindernis Regenbogen) (1911) print in high resolution by Moriz Jung. https://www.rawpixel.com/image/7726770/image-art-vintage-planeFree Image from public domain license