My understanding is the traditional Trip Around the World, looks more like this ...
http://quiltville.com/tatw.shtml
It gives a somewhat on point look, because of the layout starting with one centre block (the world), and then squares around.
Whereas yours is an on point layout, which gives more of a square look.
Because of that, I'd think yours is more likely a Boston Commn variation ...
http://smartflix.com/store/video/648...n-Common-Quilt
To me it doesn't matter! It's beautiful!