Daniel David Palmer, portrait photograph (undated)

Portrait photograph of Daniel David Palmer (1845-1913), 350x428px, credited on its Wikimedia Commons file page to Palmer College of Chiropractic's own hometown gallery historical photo collection (a direct holding source at the institution Palmer founded); photographer and exact date unrecorded (Commons lists the date as unknown). Commons categorizes the file as public domain in the United States, consistent with an undated early-20th-century photograph published before 1931, with no attribution required. No Wellcome, Library of Congress, or BnF/Gallica record for this specific photograph was found after a dated search of all four supported archives on 2026-08-31 (queries for a D.D. Palmer chiropractic founder portrait and for Palmer School of Chiropractic historical imagery returned no on-topic Wellcome or LoC results; Gallica results were entirely off-topic French-language newspaper matches). The photograph itself carries no stated date; the file was originally uploaded to Commons on 17 September 2006 and a lossless crop (the 350x428px revision actually used here) was uploaded by the same user on 14 August 2008. The year field here (2008) is that current revision's own recorded date, used per the routine's rule to use a stated reproduction/upload date only when that is what the record actually provides, and is not asserted as the photograph's original date in any caption or body text.