Series III. Business Papers is comprised of correspondence, financial, legal, and estate papers. The business correspondence describes Bertram's financial affairs and the distribution of cargoes in the United States. It also includes letters (1873-1878) from business associate George Ropes to Bertram's agent George R. Emmerton. These letters discuss the settlement of Bertram and Ropes' business relations. Also of note is correspondence regarding the closing of the Arnold Hines & Company's African agencies in 1879. Legal papers include agreements between Bertram and his agents, and loan agreements made between his estate executors and the future members of Ropes Emmerton & Company.