Sylvester Graham [portrait]
An 1880 wood-engraved portrait of Sylvester Graham, published in New York by Harper & Brothers and held by the Library of Congress Prints and Photographs Division under LCCN 99406591 (digital ID cph.3c23830). The Library of Congress catalog record’s Rights Advisory field states “No known restrictions on publication,” confirmed by directly fetching the LOC item page (the phrase appears twice on the page). Because this is a “no known restrictions” posture rather than an explicit public-domain dedication, the archive tags the corresponding media asset no_known_restrictions per the rights-mapping convention, rather than the stronger public_domain tag Wikimedia Commons’ own category labels (which host a copy of the same LOC scan) would suggest. This is the source of the case’s actor media asset, the portrait of Sylvester Graham.