John Hayward, The Day and Masters 1782 map of Somerset is on 9 sheets each 800 mm x 650 mm. At A4 size it would not be much use! It was republished in 1981, together with Greenwoods map of 1822, by The Somerset Record Society (Volume 76). It might be possible for you to buy a set, though by now there is a chance that they are out of print. Stanley Castle