Skulls: twenty-one skulls or parts of skulls arranged in four rows. Photograph. https://www.rawpixel.com/image/13962177/skulls-twenty-one-skulls-parts-skulls-arranged-four-rows-photographFree Image from public domain licenseLaying out bags of hot rosin to harden at a turpentine works in Statesboro, Georgia. Sourced from the Library of Congress. https://www.rawpixel.com/image/12262601/photo-image-dog-person-animalFree Image from public domain license