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Trusting no one but Jaujard, she initially hesitated to share her records. After Jaujard had put her in touch with Captain James Rorimer of the Monuments, Fine Arts, and Archives program it took months of relationship building before she decided to turn over her most important records. The information Valland was able to supply led to the discovery of multiple repositories of looted art in Southern Germany, most prominently at Neuschwanstein Castle in the Bavarian Alps, where more than twenty thousand works of art and cultural objects were found. She oversaw the return of 1,400 crates of artwork from Neuschwanstein Castle direct to the Jeu de Paume. Valland's records would later assist in speeding up the return of looted artworks to their rightful owners.