The House of Whispers by William le Queux

One evening, a few days later, Gabrielle, seated beside her father at his big writing-table, had concluded reading some reports, and had received those brief, laconic replies which the blind man was in the habit of giving, when she suddenly asked, "I believe, dad, that you have a quantity of the Glencardine papers, haven't you? If I remember aright, when you bought the castle you made possession of these papers a stipulation."

"Yes, dear, I did," was his answer. "I thought it a shame that the papers of such a historic family should be dispersed at Sotheby's, as they no doubt would have been. So I purchased them."