I've just finished the aforementioned treatise. Since I am born in 1965 I didn't have much knowledge of the events post independence till the calling off of the emergency. Books like Freedom at Midnight, India wins Freedom were available to throw enough light on Pre-Independence era. However I didn't find any reliable material covering the times you did in this book.
You have given your best in writing the said book and you certainly deserve kudos for the same.
I wasn't that surprised to note the omission of the Nagarwala scandal and Nanavati case in this book but the Scam in the share market involving Harshad Mehta could have been alluded.
The most disappointing omission however was Kandahar Hijack case of December 1999. What made such a disastrous event that shook the entire country
escape your attention I would be very grateful to know.