At the end of the One Variable Advanced Calculus table of contents is this text: > Copyright © 2018, You are welcome to use this, including copying it for use

At the end of the One Variable Advanced Calculus table of contents is this text: > Copyright © 2018, You are welcome to use this, including copying it for use in classes or referring to it on line but not to publish it for money. I do constantly upgrade it when I find things which could be improved.