Yes, the books are the same. In the lesson plan book the American history books are in a separate list (to make it easier for those out-of-country users to identify and substitute their own country’s history). In the curriculum guide all of the books are listed together in alphabetical order with American history books marked (AH).
If you haven’t done Visits to North America yet, you could easily do it with the Early Modern study. Just complete one Visit each week in the place of the geography plans listed in the study.