Calculus: Multivariable

When I first started teaching Calculus many years ago, I checked the textbooks being used at a few colleges and found them too disorganized. I then examined about 50 calculus books, and finally selected one for the following year. I used this book for all three semesters of Calculus, for a total of five years, until I started using rough drafts of my own book for Calculus I. The original book is indeed one of the best; yet, it has (for the purposes I have in teaching) a number of deficiencies. I wanted to copy the best and yet remedy the flaws in my own book. One is the overall organization. It was quite good, and yet there are a number of tangential topics the author discusses which seem to detract from the main thrust of the book. For example, there are extensive discussions of applications to Economics in Chapters 4, 5, and 17, or quadric surfaces in three dimensions in a chapter on vectors. I have tried to remedy this in my own textbook, as well as add applications directly related