Ordnance survey map: Measham, Swadlincote, Hartshorne, Repton, Littleover, Derby, Duffield, Hazlewood, Belper, Alderwasley, Lea, Tansley, Matlock, Ashover, Holymoorside, Barlow, Ashby, Calke, Ticknall, Melbourne, Horsley, Denby, Amber- gate, Wingfield, Higham, Clay Cross, Tupton, Chesterfield, Whittington, Dronfield (marked 3X) Scale 1:25,000 with industrial/archaeological sites marked. The maps are arranged in groups with lists of places attached to each group 1950s