Previous Workbooks

One of the areas I’ll be working on this month is my office. I’m leaning towards throwing away my previous SCS workbooks because I have all the content on the USB keys you send each month. I glanced at some of my 2017 workbooks and it didn’t feel necessary to keep them as a reference or useful guide for future work. I want to make sure I’m not missing something… do you suggest we keep the physical used workbooks for a reason I might not be considering?!

Thank you!