Image by Henri Becquerel, created by placing radioactive materials on a photographic plate, 1903. Via Wikipedia user Thangalin.
A dune on Mars, captured by NASA and posted on Lori Fenton’s great blog – her description of the image:
“A piece of Mars: A single dune sits on the surface of Mars, not too far from the north pole. It’s early spring, but this far north the dune is still covered in white CO2 frost (as well as a thin yellow layer of airfall dust). But the sun has done some work already: the dark spots are areas where enough frost is gone from the warm sun’s rays, revealing the lovely black sand beneath. Before long the frost will be gone and the dark dune will be fully released from its wintery blanket. (ESP_033729_2565, NASA/JPL/Univ. of Arizona)”
“Apache Gaun” by Edward Curtis, 1906 (via Northwestern University Library)
3d models, created from unrelated photographs. Various PhotoScan settings for geometry generation result in wildly different objects (above: photo batch 1, arbitrary, sharp, medium).