Oxcart pulling naval stores
An engraving from Frederick Law Olmsted's 1856 book A Journey in the Seaboard Slave States. A slave leads a team of oxen pulling a cart loaded with barrels of turpentine along a dirt road through the woods. To the side, another slave is chopping at a pine tree with an axe to expose the sap, while a white man watches with a gun over his shoulder. Log buildings are visible in the background.
Public Domain is a copyright term that is often used when talking about copyright for creative works. Under U.S. copyright law, individual items that are in the public domain are items that are no longer protected by copyright law. This means that you do not need to request permission to re-use, re-publish or even change a copy of the item. Items enter the public domain under U.S. copyright law for a number of reasons: the original copyright may have expired; the item was created by the U.S. Federal Government or other governmental entity that views the things it creates as in the public domain; the work was never protected by copyright for some other reason related to how it was produced (for example, it was a speech that wasn't written down or recorded); or the work doesn't have enough originality to make it eligible for copyright protection.