Two maps of Brackaville and Derry, Co. Tyrone, one showing the load laid out for a bleachmill in Brackaville, 1789, the other showing the existing mearings of farms and the proposed new boundaries; map of Clonmacash, Co. Armagh, 1829; map of Ardress East, Co. Armagh, showing plantations; James O'Hagan's map of Armagh City, 1851; longitudinal section of the Lower Bann from Toome, Co. Antrim, to Cutt's Weir, Co. Derry, showing the proposed hydro-electric schemes, c.1935: rental and account of the Knappagh estate, Co. Armagh, Johnston family, 1845-1846.