The William Lusk Webster collection, with the exception of a few personal papers and the items collected by Ralph Hewson (the Webster family lawyer and a local historian), covers the years after Dr. Webster's return to Shediac (1950). The collection includes correspondence and notes on the Fort Beauséjour Museum, Shediac; Acadian history; and the New Brunswick Museum. There are land grants and transfers with related notes and correspondence.

The material assembled by Ralph Hewson includes the school register of Fort Lawrence, 1878; assessment records from several polling districts, 1870-1873; lists of officers of Cumberland County, 1874,1881,1883; and financial records of St. Andrews Church (Pointe-du- Chêne), 1866-1812. Also included are records and correspondence of the New Brunswick Museum Foundation, 1949-1971 and personal papers of William Lusk Webster, 1920-1974.

This fonds consists of correspondence, specifications, patents and notes on Abraham Gesner's geological work. There are records of his patents and petitions for patents as well as specifications and plans for manufacturing kerosene. Some personal papers, including a memorandum of a will, an appointment to the Geological Survey of New Brunswick, and the assignment of a mortgage are included.

This fonds consists of correspondence of the Matthew family, 1892-1925; of George F. Matthew, 1862-1922; of Robert Matthew, 1889; and of William Diller Matthew, 1910-1927.

There are also notebooks and notes of G.F. Matthew, W.D. Matthew, and Robert Matthew, 1846-1904; lecture notes of G. F. Matthew, 1880-1899; notes of William Diller Matthew, 1964-1971, and reports by Fritz Frech, B.F. Howell and Karl August von Mickwitz on geological topics. Also included are maps and photographic copies of maps of vicinity of Saint John and Newfoundland, 1841.

This fonds includes notebooks, scrapbooks and correspondence with Tappan Adney about fruit culture. There is a diary of F. P. Sharp, with a transcript, 1846-1850 and his correspondence, 1864-1898. There are also newspaper clippings about Sharp and fruit culture

This fonds consists of archaeological plans of prehistoric campsites on the Saint John River between Woodstock and the Tobique and notes on his archaeological research. There is a ornithological notebook of birdsongs heard in Woodstock in the spring migration of 1934-1937. There are also press clippings and a letter from Chief William Saulis of the Tobique reservation, concerning Adney's work on native peoples, and a biographical article from "Time" magazine, 1944.