Popular Lectures on Human Nature, a book cover illustration by an unknown artist referencing Prof. W.G Alexander. Original… Popular Lectures on Human Nature, a book cover illustration by an unknown artist referencing Prof. W.G Alexander. Original… Free Image from public domain license
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An antique illustration of the human nervous system by Galtier-Boissière and Émile (1912). Digitally enhanced from our own… An antique illustration of the human nervous system by Galtier-Boissière and Émile (1912). Digitally enhanced from our own… Free Image from public domain license
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Aurora Borealis in High Latitudes from the book William MacKenzie’s National Encyclopedia (1891), a colored illustration of… Aurora Borealis in High Latitudes from the book William MacKenzie’s National Encyclopedia (1891), a colored illustration of… Free Image from public domain license
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Openings of the Panama Canals by John. S Pughe (1870-1909), a cartoon commentary that suggests that the age of aviation will… Openings of the Panama Canals by John. S Pughe (1870-1909), a cartoon commentary that suggests that the age of aviation will… Free Image from public domain license
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The northern stellar hemisphere of antiquity from The Harmonia Macrocosmica of Andreas Cellarius (1660). Digitally enhanced… The northern stellar hemisphere of antiquity from The Harmonia Macrocosmica of Andreas Cellarius (1660). Digitally enhanced… Free Image from public domain license
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Feather by Jean Bernard (1775-1883). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Feather by Jean Bernard (1775-1883). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license
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