||New 4-storey premises lately erected in freely treated Gothic style designed by Robert Young. Adjoining premises to be demolished and replaced by shops similar to those on other side, to create symmetrical effect. also stores in Sugar Lane, 1869. Smoking and drying houses, 1875. Further stores, 1877,
PRONI, Young & Mackenzie papers, D2194/2/1,2; IB 12, 1 Jun 1870, 132; W.S. Ferguson, A.J. Rowan, J.J. Tracey, Historic Buildings…in and near the City of Derry (UAHS, 1970), 44; Alistair Rowan, The Buildings of Ireland: North West Ulster (1979), 400; Paul Harron, Architects of Ulster: Young & Mackenzie, a transformational provincial practice 1850-1960 (UAHS, 2016), 243.