Collection consists of personal papers of Patrick A. Largey and members of his extended family; plus business records for a variety of businesses owned by Largey, his Estate, and other family members. The collection is divided into five major groups of subgroups: family subgroups, hardware company subgroups, lumber company subgroups, paper and pulp company subgroups, and miscellaneous subgroups.

The Family Subgroups include personal papers of Patrick A. Largey, his widow Lulu Largey Catron, his two sons Edward Creighton Largey and Morris Sellers Largey, his two daughters Lulu Largey McGinn and Mary Montana Largey MacDonald; his son-in-law Raymond J. MacDonald, his grandson Raymond Bourke MacDonald, and the Patrick A. Largey Estate.

The Hardware Company Subgroups include records of P.A. Largey and Company of Virginia City, Montana, consisting of correspondence (1880) and financial records (1873-1881); records of the Butte Hardware Company, consisting of correspondence (1883-1904), court papers (1885-1902) including a transcript (1895) of the inquest on the warehouse explosion, financial records (1881-1905), legal documents (1886-1907), organizational records (1897-1902), and miscellany; and records of J.M. Montgomery and Company, consisting of correspondence (1895-1897), court papers (1894-1896), financial records (1892-1897), legal documents (1892-1897), and miscellany.

The Lumber Company Subgroups include records of the Beaverhead Lumber Company, consisting of correspondence (1914-1915) and financial records (1909-1915); records of the Coeur d'Alene Lumber Company, consisting of correspondence (1902-1916), court papers (undated), financial records (1904-1920), legal documents (1903-1919), organizational records (1900-1918), reports (undated), and miscellany; records of the D.W. Hughes Lumber Company/Hughes Lumber Company, consisting of correspondence (1913-1939), court papers (1936-1939), financial records (1916-1939), legal documents (1918-1939), organizational records (1930), and miscellany; records of the Largey Lumber Company, consisting of correspondence (1902-1965), court papers (1902-1945), employment records (1914-1958), financial records (1902-1962), legal documents (1901-1961), organizational records (1901-1915), subject files (1912-1959), and miscellany; and records of the Bernard Noon Lumber Company, consisting of correspondence (1900-1902), court papers (1898-1902), employment records (1898-1902), financial records (1899-1902), legal documents (1899-1902), production records (1897-1901), and miscellany.

The Paper and Pulp Company Subgroups include records of the King and Largey Paper Mills, consisting of correspondence (1905-1910), financial records (1905-1911), legal documents (1906), and organizational records (1905); records of the Montana Book Company, consisting of correspondence (1901-1903), employment records (1903), financial records (1901-1903), legal documents (1901-1903), and miscellany; and records of the Passmore Paper Company, consisting of correspondence (1900-1911), court papers (1900-1908), financial records (1897-1909), legal documents (1901-1905), organizational records (1897-1910), reports (1905), and miscellany.

The Miscellaneous Subgroups include records of the New York theater companies Will J. Block Amusement Company and The Rork Company, consisting of correspondence (1908), court papers (1907-1909), employment records (1905-1906), financial records (1905-1909), legal documents (1905-1908), organizational records (1905-1908), miscellany, and clippings; records of E. Creighton and Company, consisting of correspondence (1865-1877), court papers (1869-1873), and financial records (1863-1876); papers of John D. Haines, consisting of correspondence (1896-1913), and miscellany; papers of John M. Howard, consisting of a letterpress book of correspondence (1906-1909); papers of Samuel B. Rice, consisting of correspondence (1872-1891); records of the Silver Bow County Airport Commission, consisting of correspondence (1953-1961), financial rerecords (1956-1961), legal documents (1949-1960), reports (1945-1947), and miscellany; records of the State Savings Bank, consisting of correspondence (1910), court papers (1897), and miscellany; and mining company subject files (1889-1913, 1939) concerning mines owned by P.A. Largey, the Largey Estate, and others.