Use the rebus to enter 1, 2, or 3 letters per square. Tried to make the fill on this one fair, though there is one instance of two Michigan place names crossing each other, so I encourage you to use a map if you're unfamiliar with the pleasant peninsula.
Loved it! Those long entries (and remembering how to spell AYAHUASCA) were really good challenges. (Had to check because I couldn't find my typo foer the life of me — I had "FR" instead of "FRE" at 52A/52D.)