https://www.loc.gov/collections/musical-instruments-at-the-library-of-congress/articles-and-essays/stringed-instrument-collection/violins/betts/
Violin by Antonio Stradivari, Cremona, 1704, "Betts" [Full strung instrument, front and back]. Performing Arts Reading Room, Library of Congress. The "Betts"...
antonio stradivaristringed instrumentsviolincremonabetts