National Day of Prayer flyer in a soldier's hand. Original public domain image from Flickr https://www.rawpixel.com/image/4042468/photo-image-paper-bookFree Image from public domain licenseAn image of the Prater Tower with a cloudy night sky as the backdrop. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3300629/free-photo-image-ferris-wheel-night-amusement-park-architectureFree Image from public domain licenseBoer War: a British officer on a battlefield demanding possession of the wounded from the Boers. Halftone, 1900, after R. M.… https://www.rawpixel.com/image/13993926/image-horse-cartoon-peopleFree Image from public domain licenseBoer War: an army officer examines the scarred backs of whipped African deserters. Halftone after J. Finnemore after E.… https://www.rawpixel.com/image/13996590/image-horse-cartoon-personFree Image from public domain license