E-Books Have a Future in iTunes

Top publishers are revving up their libraries of digital books to capitalize on the presumed success and hype of the Amazon Kindle — actual sales are still based on speculation — but one big name is putting its money on a device that has proven its popularity: the iPhone.

“We’re very bullish on that as a platform. We think it’s gonna be a great competitor to Amazon,” said David Langevin, VP and director of electronic markets for Houghton Mifflin Harcourt Publishing Company.