Parlor Stereoscope (ca. 1937) by Chris Makrenos. Original from The National Gallery of Art. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3377429/free-illustration-image-antique-art-artworkFree Image from public domain licensePhotograph taken by magnesium light by John Coates Browne https://www.rawpixel.com/image/14249908/photograph-taken-magnesium-light-john-coates-browneFree Image from public domain license