Karl Blossfeldt’s Urformen der Kunst (1928)

The Notre-Dame Cathedral in Art (1460–1921)

Women at Work during World War I

Hans Prinzhorn’s Artistry of the Mentally Ill (1922)

The Art of Book Covers (1820–1914)

Highlights from The Cleveland Museum of Art’s release of more than 30k images of public domain works

Physical Training for Business Men (1917)

Landscapes of the Western Front, 1914–1918

Kumataro Ito’s Illustrations of Nudibranchs from the USS Albatross’ Philippine Expedition (ca. 1908)

Flatfish Camouflage Experiments (1911)

Ernst Haeckel’s Jellyfish

Swedish House-Gymnastics (1913)

The Egg Dance: From Peasant Village to Political Caricature

Details from Gustav Klimt’s The Kiss (1908)

George Mayerle’s Eye Test Chart (ca. 1907)

Alexander Graham Bell’s Tetrahedral Kites (1903–9)

Photographs of Sea Stars (1917)

The War Art of Paul Nash (1917–1944)

Edward Curtis’ Photographs of Kwakwaka’wakw Ceremonial Dress and Masks (ca. 1914)

Yellow Journalism: The “Fake News” of the 19th Century

A Selection from The MET’s Public Domain Collection, Now Free from All Restrictions

W. E. B. Du Bois’ Hand-Drawn Infographics of African-American Life (1900)

The “Living Photographs” of Mole and Thomas

Rainbows in Art