So rated because it contained in black and white the transcribed Latin record of a particular 1663 native baptism which supports the skepticism of many investigators that Étienne Boisvert (~1661-1731) was a legitimate son of a French pioneering couple. Instead, he appears to have been a half-orphaned Malécite godson. For me, that's the brass ring, since the person in question is an ancestor and this revelation comports with family lore. Unfortunately, the book did not contain some important earlier baptismal records, including the one from 1640 that I was also seeking. But that hiatus was caused only by the fact that the surviving historic document is incomplete and partly lost. The introduction and commentary by Hébert was ample and excellent. I learned a lot, although it was not explained why the original register was suddenly segregated by ethnicity in 1661. Nevertheless, this book is a goldmine for those interested in ethnogenesis in New France.