"Founded by the researcher Barry Pearce, the Bowed Strings Iconography Project is intended as a historical research tool for musicians, luthiers, bow makers, students, researchers, academics, and teachers. It provides an extensive database of information on sources of bowed string instrument iconography and associated images dating as far back as the 9th century - when bowing is believed to have originated (the earliest iconographic evidence is from c.920-930 CE Iberia)."
https://www.thestrad.com/news/new-website-displays-images-of-bowed-string-instruments-from-all-periods-of-history/11747.article