Series I - Field Notes
Letters to William Brewster 1878-1917
Arizona Birds 1881
Field notes 1891
Field notes journal 1892-1902
Field notes 1894
Field notes 1896
Field notes 1897-1898
Field notes 1901
Field reports 1902
Field reports 1903
Collecting list / Field catalog 1902-1903
Field notes 1903
Field notes 1905
Field notes 1908-1910
Field notes 1920
Field notes 1924
Field notes 1925
Field notes 1926
Field Notes 1927
Field Notes 1928
Field reports and research materials 1929
Series II - Biographical material and photographs
Series III - Transactions reprints