@EileenHarris @chriscas 

Eileen -

In addition to what Chris stated, you can try to save it yourself by adding /undelete at the end of the url for the course after clicking on the home button.

the url will be .../courses/234323 /undelete  where I have left off the first part of the url specific to your school, then you should have courses and then the course id number is the number I made up in the url

That will list most of what has been deleted and you can recover those items listed.

Ron