Maximilian Bircher-Benner, portrait (Wikimedia Commons)

Photographic portrait of Maximilian Bircher-Benner. License posture read from the Wikimedia Commons imageinfo/extmetadata API on 2026-06-05: LicenseShortName 'Public domain', UsageTerms 'Public domain', author 'Unknown author', DateTimeOriginal 'before 1939'. Native resolution 2551x3421 px; resized in place to a 1600 px longest side (1193x1600). The identification of the sitter as Bircher-Benner rests on the Commons file record alone (a single-record identification: the file is titled 'Maximilian Bircher-Benner (1867-1939)'); the caption uses Commons's own naming and asserts nothing beyond it. The year field records the 'before 1939' bound from the record. Rights tag public_domain matches the Commons record. Accepted residual: Commons-only media asset; a dated search on 2026-06-05 found no Bircher-Benner portrait in Wellcome Collection, Library of Congress, or BnF/Gallica, so Wikimedia Commons is the located archive record at this date.