Answered By: Robert Sebek
Last Updated: Jan 12, 2015     Views: 55

It is hard to predict how fast or slow the United States Postal Service operates when a package is sent in the standard mail. However, according to their website, the return mail service can take up to eight days. Please try to plan ahead when returning a book. If the due date is approaching, allow time for the book to get to the library before or close to the due date.

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