Free Use Images

An 1870 engraving by <n>Henri Hildibrand</n> for <n>Jules Verne</n>'s novel <n>Around the Moon</n>.

<n>Queen Cat</n> from the 1911 book <n>Kittens and Cats: A First Reader</n>. Photo by <n>Harry Whittier Frees</n>.

<n>Discomedusae, Plate 8</n> (1904) by <n>Ernst Haeckel</n> from his collection <n>Kunstformen der Natur</n>.

A photograph by <n>Harry Whittier Frees</n> from the 1911 children's book <n>Kittens and Cats: A First Reader</n>.

An eclipse seen from inside an <n>O'Neill Cylinder</n> space colony. Painting by <n>Don Davis</n> for a 1975 <n>NASA</n> study.

<n>Dunce Cat</n> from the 1911 book <n>Kittens and Cats: A First Reader</n> by <n>Eulalie Osgood Grover</n>.

<n>The Mouse Trap</n>, a 1911 photograph by <n>Harry Whittier Frees</n> from the book <n>Kittens and Cats: A First Reader</n>.