Manuscript of Violin Sonata No. 27 in G major, K. 379, Sketches (<i>18 pages</i>).
<bdi><a href="https://en.wikipedia.org/wiki/en:Wolfgang_Amadeus_Mozart" class="extiw" title="w:en:Wolfgang Amadeus Mozart"><span title="Austrian composer of the Classical period (1756-1791)">Wolfgang Amadeus Mozart</span></a>
</bdi>
1781
<a rel="nofollow" class="external text" href="https://loc.gov/item/ihas.200033157">US Library of Congress</a>