This collection consists of family and business records belonging to the Hilyards and related families. The business records of Thomas Hilyard and, after 1873, Hilyard Brothers include lumbering agreements, invoices, accounts, mortgages, deeds, shipbuilding agreements and a volume with shipping accounts, lists of vessels built and voyages made. There are also journals, day books and other accounting records of Thomas Hilyard and Hilyard Bros, a record of lumber sawn at Hilyard Bros., payroll and time books Material belonging to the Seeley family includes records about the ship "Australasian", bonds, agreements, deeds, invoices and receipts to Alexander McLachlan Seely from Saint John businesses, insurance documents, accounts and personal correspondence. There is also information about the Acadia College Endowment Fund and Leinster Street Baptist Church and an account book of Spring Dale Paper Mill, 1877.
There are also records relating to the Saint John harbour issue, 1885-1914, and documents about the ship "Magna Charta", 1865-1884. Invoices, accounts, workmen's accounts and other material belonging to the related McDonald and Roberts families are also included. There is an abstract book of surveyors' summaries of lumber transported by scow, 1897-1900, and a letter book of F.W. Holt (Saint John civil engineer), 1909-1913.