Pipreola whitelyi.♂ et♀. Inscriptions: "Ibis.1886.Pl.XII. J.G.Keulemans.lith. Hanhart.imp.". Printer: Hanhart. https://www.rawpixel.com/image/7665579/image-art-vintage-public-domainFree Image from public domain licenseA black and white farmyard cockerel. Coloured lithograph by P W M Trap after J G Keulemans. https://www.rawpixel.com/image/13965760/image-pattern-animal-public-domainFree Image from public domain licenseA brown and black farmyard cockerel. Coloured lithograph by P W M Trap after J G Keulemans. https://www.rawpixel.com/image/13960249/image-animal-public-domain-birdFree Image from public domain licenseBlack-eared Wood Quail, Odontophorus melanotis (1842–1912) by John Gerrard Keulemans. https://www.rawpixel.com/image/11499481/image-art-vintage-illustrationFree Image from public domain licenseSlaty-backed Forest Falcon, Micrastur mirandollei (1842–1912) by John Gerrard Keulemans. https://www.rawpixel.com/image/11499498/image-art-vintage-illustrationFree Image from public domain licenseRufous-necked Wood Rail, Aramides axillaris (1842–1912) by John Gerrard Keulemans. https://www.rawpixel.com/image/11499475/image-art-vintage-woodFree Image from public domain licenseThe Monkey-Eating Eagle, or The Great Philippine Eagle, Pithecophaga Jefferyi, Philippine Islands by John Gerrard Keulemans… https://www.rawpixel.com/image/9976389/image-paper-person-artFree Image from public domain licenseEmbarking sick below third cataract. Coloured lithograph by J.G. Keulemans after W.W.C. Verner. https://www.rawpixel.com/image/13959391/image-palm-tree-personFree Image from public domain licenseVleermuizen in een boom (1868) by Johannes Gerardus Keulemans, François P L Pollen and Pieter Willem Marinus Trap https://www.rawpixel.com/image/13779315/image-paper-boom-treeFree Image from public domain licenseVier vogels op een tak (1899) by Johannes Gerardus Keulemans and Pieter Willem Marinus Trap https://www.rawpixel.com/image/13768393/image-paper-art-trees-branchFree Image from public domain license