Here is a very early map of Duaron, the continent where Eaglethorpe Buxton has most of his adventures.  (Eaglethorpe Buxton and the Amazons takes place hundreds of miles to the south on the continent of Ennedi.)

You can see Aerithraine (spelled without the e at the end) is in the far west.  Brest, where Elven Princess takes place is right about in the middle– part of the “fallen lands.”  Lyrria where Sorceress takes place is on the south coast.  Theen and Goth, two places mentioned in the story but not visited (except maybe in the new book) are in the southeast.

I have a later, much more detailed map, but it’s too much to scan, and who would be interested really anyway?  I could easily have written Eaglethorpe with no map at all, as I (and Eaglethorpe) play pretty fast and loose with the geography.