Nook's papa is reportedly looking to sell its publishing unit, Sterling Publishing. According to the Wall Street Journal, B&N acquired Sterling in 2003, ramping up its publishing efforts after more than 30 years in the business. News of a possible sale follows last month's Q2 earnings report that saw a $6.6 million net loss for the bookseller. That same quarter, the company's Nook business took an 85 percent leap forward, landing it a $220 million value. Barnes & Noble has yet to comment.