Consists largely of correspondence of Charles Kean O'Hara, principally with John Sullivan, income tax agent, Villierstown, County Waterford and the Office of the Inspector of Taxes, Sligo concerning the payment of and appeals against British and Irish income tax, super tax and sur tax. Enclosed with the correspondence are a number of accounts of farm expenditure, inventories of stock on the O'Hara desmense, and statements of the sources of Charles Kean O'Hara’s income. It also includes some material relating to Charles Kean O’Hara’s personal income tax.