The Brandens
[MORE TO COME]
Nathaniel Branden and Barbara Branden were close associates of Ayn Rand but she later morally condemned them. The Brandens both wrote unauthorized biographies of Ayn Rand--after her death in 1982.
"To Whom It May Concern" by Ayn Rand.
The Passion of Ayn Rand's Critics, by James Valliant:
http://www.amazon.com/Passion-Ayn-Rands-Critics/dp/1930754671