The map is pre Inclosure and covers Clanfield, Bampton, Aston and Yelford. The note with the Yelford map says it was from a map of 1624/5. A note at the right side of the page suggests all these details were pulled together from various sources in 1833 which is post Inclosure, which for the Bampton area was 1821. I can't work out what maps were used for the non-Yelford map but it says HHH is Aston 1771.
This map was produce for the sale of the Lew Estate in 1914. There used to be a Post Office and a school in Lew, both shown on this map between University Farm and Holy Trinity Church on the main road.