The Amateur Guitarist. Defying everyone's yawns, As he sings his puny verse, He would sing a parlor-song, On the ruins of… https://www.rawpixel.com/image/8983571/image-paper-cartoon-personFree Image from public domain licenseGapende hond in een mand (1887 - 1911) by Gust van de Wall Perné https://www.rawpixel.com/image/13739405/gapende-hond-een-mand-1887-1911-gust-van-wall-perneFree Image from public domain licenseA hospital ward for insomniacs. Pen drawing by G.E. Studdy, 1910. https://www.rawpixel.com/image/13979720/hospital-ward-for-insomniacs-pen-drawing-ge-studdy-1910Free Image from public domain licenseMen around a table yawning. Etching by T.L. Busby, ca. 1826. https://www.rawpixel.com/image/14003167/men-around-table-yawning-etching-tl-busby-ca-1826Free Image from public domain licenseVijf predikende geestelijken (1789) by anonymous, George Moutard Woodward and William Holland https://www.rawpixel.com/image/13766563/image-paper-cartoon-faceFree Image from public domain licenseBoer War: soldiers in camp at Bloemfontein being provided with tea as they awake. Halftone, c. 1900, after R. Cleaver after… https://www.rawpixel.com/image/13980489/image-cartoon-person-artFree Image from public domain license