Les Huguenots: sketch of the opera set for the first act (1896). Pen, watercolour and gouache; 380 x 442 mm. For the Théâtre… https://www.rawpixel.com/image/7665186/image-art-vintage-public-domainFree Image from public domain licenseGespplaat met wapen van de prins van Oranje met inscriptie over de actie van de Doggersbank in 1781 (1781 - 1790) https://www.rawpixel.com/image/13751575/photo-image-white-background-gold-public-domainFree Image from public domain license