Porcineograph, 1875

Sometimes you discover treasures in the archives on your own, and sometimes it’s through word of mouth. I first learned about this map, titled “Porcineograph (1875),” from Slate Vault, one of my favorite historical resources on the web. The map was commissioned by William Emerson Baker to help promote his belief in hygienic farming. It’s a remarkable story, and you should read the Slate article (link here) or visit the map’s page on the Library of Congress website (link here) if you wanna learn more.

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