This map of Sussex was first drawn by Frederick Dixon, a surgeon who practised in Worthing and died in the cholera epidemic of 1849. William Topley (1841-94) who drew the geological map in its third lithograph issue was a geologist by profession born in Greenwich. He surveyed the Weald from 1863 to 1873 and was superintendant of the publication of the Ordnance Geological Survey from 1880. This issue was revised by Thomas Rupert Jones (1819-1911) Assistant Secretary of the Geological Society from 1851-1862 and President of the Geological Association from 1879-81. Kingsley (1982) no. 129C.