Book Store The Western National Parks Association Bookstore at the Lake Mead Alan Bible Visitor Center features a wide variety of books for teachers. You can find guide books, books about local history and the southwest, Native Americans, and children's books on plants and animals of the Mojave Desert. Teachers who show a teacher identification card are entitled to a 20% discount on all items in the bookstore. The bookstore is open seven days a week from 8:30 a.m. to 4:30 p.m., except Thanksgiving, Christmas, and New Year's Day. For more information, please call the visitor center at (702) 293-8990.