The yellow slips indicate that the book was obtained through I-Share. You must check out these books on your Cougar Card at the Circulation Desk. The due date, 30 days from the time you check out the book, will be written on the yellow slip, and will also appear online on your account.
The blue slips indicate that the book was obtained through the national consortium. The book is already checked out to you and the due date already marked. If there are no renewals allowed, this will also be indicated on the blue slip.