A receipt proves that you've returned the books. It also will tell you if you've accrued any fines. You will need to pay all fines, regardless of the amount, before May 1 of that year. I got a blue card in the mail or an e-mail saying my book has been recalled. When a book is recalled, it means someone else is requesting your book.
Recalled items have a new and earlier due date and a high fine if returned after the new due date.
I got a notice in the mail or an e-mail saying I have overdue books, but I know I returned them. This is why you ask for a receipt. You will need to bring in your receipt to show that you did return them. It turns out that I didn't return my books. UNL - High School Library User program runs from September 1 of the current year to May 1 of the next year. .