The Right to Read
Richard M. Stallman
Mathematics - Free of Worries at the University I
Christian Posthoff; Brand Steinbach
A Practical Guide to Self-Hypnosis
Melvin Powers
The Ladies Book of Useful Information / Compiled from many sources
Anonymous
The Door with Seven Locks
Edgar Wallace
The Adventures of Sherlock Holmes
Arthur Conan Doyle
The Secret Adversary
Agatha Christie