This book does give complete parallel original text and English translation for Nostradamus's Prophecies, and is apparently authoritative.
Unfortunately, while the author professes even-handedness, there is a clear bias towards credulousness - particularly, many instances where he says that some quatrain is "clearly" or "obviously" referring to a particular moment in history, when it could equally have applied to myriad other events that might have taken place but did not.
Nonetheless, there is a wealth of historical detail in the annotations throughout the text, and it is a worthy and scholarly work. My one other gripe is that I feel the index should have been much more extensive - ideally with the depth of a proper concordance.