Scope and Contents From the Collection: The most important materials in the collection are interoffice correspondence (1877-1881, 1885, 1893) between mining department superintendent Samuel A. Barbour and general manager Henry Knippenberg and other company officials. In addition there are outgoing letterpress volumes (1871-1886) of Noah Armstrong, J.W. Earl, Henry Knippenberg, George Conway, and others. There are employment records (1876-1922) including payrolls, time books, and payments charged to employees' accounts for store...