An early Facebook employee and former assistant to Mark Zuckerberg will have a memoir out this summer.

Katherine Losse, who joined the social network giant back in 2005 and remained for five years has a deal for "The Boy Kings: A Journey into the Heart of the Social Network." The Free Press, an imprint of Simon & Schuster, announced Tuesday that the book will come out June 26. Losse will offer a first-hand account of "the vision, culture, and tactics of the hackers, venture capitalists, and Ivy League grads" who helped make Facebook a worldwide force.

Losse left Facebook in 2010 on "friendly terms," according to the Free Press. At Facebook, she was a writer and researcher.