century – 20th century
Snow Crystal V Wilson Bentley, ca. 1910s
Snow Crystal IV Wilson Bentley, ca. 1910s
Snow Crystal III Wilson Bentley, ca. 1910s
Snow Crystal II Wilson Bentley, ca. 1910s
Dew on a Spider Web Wilson Bentley, ca. 1910s
Dew on a Blade of Grass Wilson Bentley, ca. 1910s
Octopus Ewald Rübsamen, 1910
Rhyngia Arthur E. Smith, 1909
Radula of Whelk Arthur E. Smith, 1909
Portion of Beetle's Eye Arthur E. Smith, 1909
Mideopsis Orbicularis Arthur E. Smith, 1909
Butterfly's Tongue Arthur E. Smith, 1909
Tongue of Honey Bee Arthur E. Smith, 1909
Spider's Foot and Part of Leg Arthur E. Smith, 1909
Larva of Ant-Lion Arthur E. Smith, 1909
Human Skin, Vertical Section Arthur E. Smith, 1909
Foot of Water Beetle Arthur E. Smith, 1909
Diatom, Navicula Lyra Arthur E. Smith, 1909
Diatom, from Bori, Hungary Arthur E. Smith, 1909
Circlet of Hooks on a Scolex Arthur E. Smith, 1909
George Mayerle Test chart, Negative George Mayerle, ca. 1907
George Mayerle Test chart, Positive George Mayerle, ca. 1907
Diagram of the Body's Surface Marks, with Fig Leaf L. Bathe Rawling, 1913
The Kiss IV Edvard Munch, 1902
