In April 1945, Madame Roos wrote a letter to French authorities describing her piano she was hoping to get back. Roos, who was 72, was Jewish and her piano had been stolen when Nazis emptied her apartment in Paris.
A similar fate befell many of the 75,000 French Jews deported to concentration camps during World War II.
"It would take me too long to list piece by piece what was taken," said the letter, which only showed the author's last name. "But it seems to me if my piano is still in Paris, perhaps my furniture is, too."