The Bangor Public Library and Books-a-Million bookstore are teaming up this weekend to help out the library’s major renovation project. The library’s in the middle of a $9 million effort. The money’s being used to repair the roof and revitalize the building. Saturday, August 3rd, a portion of sales at Books-a-Million by the Bangor Mall will go toward the campaign. All you have to do is mention the Bangor Library when you check out and 10-percent of your purchase will be donated. The store is open from 10 a.m. to 10 p.m.