This subseries primarily focuses on the early purchases and inventory lists created for insurance purposes. Auction prices were kept by John Tancock in the European Painting Department, and include specific auction sale records of Rodin's work. Also of interest are the certificates from the Musée Rodin for the purchase of Rodin works, signed by Georges Grappe the Curator of the Musée Rodin, and list Jules Mastbaum's early purchases from the Musée Rodin, and other Rodin related materials including a list of the books purchased.