A Study in Scarlet
From Tardis Wiki, the free Doctor Who reference
A Study in Scarlet was a Sherlock Holmes book. In 1968, George Litefoot had a second edition copy in his bookshop. (AUDIO: The Age of Revolution)
The book was written by Arthur Conan Doyle, who told John Watson that he had invented "more than half" of it. It was praised by a critic from The Graphic. (PROSE: Prelude All-Consuming Fire)