The RC 651 course is being build on the book and I was just notified that his book is currently out of print two weeks before Spring term starts. The content is very good and I can't find another similar book to replace it in such a short amount of time. There will be around 20 students to take this course, and the majority of them are taking the class remotely. Therefore, putting a copy on reserve in the library will not work for them. I am hoping that ebook can be available for the students, as not everyone can afford the Amazon Prime Membership to purchase the kindle version.