British composer John Luke Rose (*1933) composed his Violin sonata No.1 op.28 in 1973. The work remained in manuscript, but now the full score can be downloaded free of charge from my website. I also included a short sound snippet. Here the link to my website:
https://www.tobias-broeker.de/rare-manuscripts/other-violin-manuscripts/duo-works/ (https://www.tobias-broeker.de/rare-manuscripts/other-violin-manuscripts/duo-works/)
And a link to the Wikipedia article about John Luke Rose:
https://en.wikipedia.org/wiki/John_Luke_Rose (https://en.wikipedia.org/wiki/John_Luke_Rose)
Best,
Tobias