Notebooks, photographs, Notebooks of A.J. Carroll, Dewsbury Junction & Wakefield Carriage & Wagon Depot, later Carriage & Wagon superintendent, Knottingley depot, circa 1940s to 1983. 4 manuscript notesbooks: 1. Notes on wagon types, codes, coaching stock and parts, materials etc., dates from pre-nationalisation when Mr. Carroll was at Dewsbury Junction & Wakefield Carriage & Wagon Depot; 2. Condemned Wagons, contains details and dates of condemned wagons 1974-1975; 3. pocket book containing notes on wagons, movements, repairs, accidents etc. 1981; 4. notebook containing simialr details of wagons, derailments etc. 1983. Accompanied by a set of colour snapshots of wagon derailments, some of which are identified and can be related to entries in the notebooks.