The Charles Close Society for the Study of Ordnance Survey Maps

Ordnance Survey Old Series one-inch map of England & Wales

Sheet 36 [Cardiff]. Surveyed 1811 to 1814 and revised 1828 to 1830

State 1. (HM6-1), NLA, 1833 View map sheet on National Library of Australia website

State 16. (HM6-14), ATL, 1862 View map sheet on Alexander Turnbull Library, National Library of New Zealand website

Full cartobibliographic details including lists of states are in The First Ordnance Survey Map by Roger Hellyer and Richard Oliver