I really liked this book. I thought that the split-story flowed easily, and it provided a nice switch of perspective at times.
I loved the historical footnotes and references, and the back-story was quite believable (I was actually telling friends about the "Kingdom of Ohio" before finding that it was part of the fiction.)
This is a blend of science fiction, historical fiction, romance and fantasy that is a fun read and a great story.
I pulled one star for rushing the story. After developing interactions with interesting historical characters such as Thomas Edison, Nikola Tesla and JP Morgan, the climax flew by in a few pages. Luckily the final few pages of the book helped to restore some of the wonder and closed the story nicely.