The folder contains correspondence and other documents relating to the liquidation of the Dunderland Iron Ore Co., Ltd. Most of the letters are by patent agent George Croydon Marks, who held Edison's power of attorney in London. Included are documents from liquidation proceedings, along with a directors' report and other items pertaining to the shareholders' meeting of November 3, 1909. Several items discuss the development of Georg Ullrich's wet magnetic separator at the Krupp works in Magdeburg, Germany.

Approximately 70 percent of the documents have been selected. The unselected material includes a report and resolution from the November meeting, along with related items from the British press; and a transcript of the debenture bondholders' motion to liquidate the company.