This map was created in 1917, so sadly it missed out on Lord Dunsany's explorations of Elfland (https://en.wikipedia.org/wiki/The_King_of_Elfland%27s_Daught...).
But... seven years separate Dunsany's novel from this map, and as everyone knows, seven is an important number in Fairyland! I declare a Fae conspiracy.
well next year will be 70 years from Dunsany's death, so pretty much everything of his should be in the public domain then. maybe the map can be updated!