Personal correspondence, business papers, business correspondence, diary 1843-1923

Business correspondence: to T. J. Lamoureaux 1900-1908

Business correspondence to and from T. J. Lamoureaux; mining papers 1887-1924

Mining papers 1844-1923

Mining papers 1890-1927

Mining papers 1880-1927

Mining records (bound), prints, ephemera, newspaper clippings

Loose envelopes and wrappers

Letter books 1896-1907

Account books, cipher books, expense accounts, notebooks, time books 1886-1907

Rolled maps

Flat maps