Fireflies at Ochanomizu by Kiyochika Kobayashi - 1880

Dresden International Hygiene Exhibition - 1911

Floating Iceberg by Frederick Edwin Church - 1859

Guide for Constructing the Letters ç and Tironian et by Joris Hoefnagel - 1591

From the Brockhaus and Efron Encyclopedic Dictionary - c. 1900

Dreams No Mortal Ever Dared to Dream Before by Gustave Doré - 1884

Heights Of The Principal Mountains In The World. Lengths Of The Principal Rivers In The World

Dragon Rising to Heaven by Ogata Gekko - 1897

Eggs by Adolphe Millot (1857-1921)

Dinosaur and Fossils by H. Winkles - 1852

Design for the Poster and Cover for 'The Raven' by Édouard Manet - 1875

Dissection of the Brain Showing Blood Vessels by Gautier D'Agoty - c. 1748

Die Pflanzenwelt by Otto Warburg - c. 1920

Death Rides a Pale Horse by Gustave Doré - 1865

Dew on a Blade of Grass by Wilson Bentley - c. 1900

Diagram for Sunday - 1460s

Dancing Animals , Illustration from 'Un Autre Monde' by J.J. Grandville - 1844

Don Quixote et Sancho Panza by Honoré Daumier - c. 1868.

Day (Le Jour), from the series, Dreams (Songes) by Odilon Redon - 1891

Wall Painting, 500–550 C.E.