Amazons massive book sale competes with indie sellers on Independent Bookstore Day

Readers, patronizing their local shops for annual Independent Bookstore Day, are once again participating, perhaps unknowingly, in a competition between indie book stores and commerce giant Amazon.

The holiday, created 12 years ago to promote local businesses in the same vein as Record Store Day, has become a nationwide boon to independent sellers, including more than 1,600 participating stores and online retailers. Taking place every year on the last Saturday of April, it's now supported...