The first picture, Sarah had immidiately recognized as Shakepeare. The fashion of his era sort of gave him away. Sarah has once read his Midsummer's Nights dream and she found it rather boring... Helana was just such a wierdo.
Dr. Seuss was up next. His book 'One fish, two fish, red fish blue fish' was the first book Sarah ''read'. She never actually read it, she just memorized it, yet no one else was meant to know that, (although that incident took place over 7 years prior).
The next portrait was of someone who Sarah pretended she never knew. It was Stephen King. His book 'The Bone Collector' Sarah once 'dicovered' in her muggle grandma's house. She never got a chance to read it, before her grandma discovered her.

"Stephen King is that man. Wrote awful dark, books, like Bone Collecter. Never read it, but just the title used to invoke nightmares". Sarah shuddered at the horrible things her imagination used to torment her. Until she realized how to control it.