Joan Clark

Common Sense Leadership: A Practical Guide to Making Leading and Managing Teams Simple (English Edition)

Cloister House Press

Joan Clarke - the biography of a Bletchley Park enigma

Sperling & Kupfer

L'amore imperfetto                              

Zinc Read

Penny Nichols and the Knob Hill Mystery          

Zinc Read

Penny Nichols and the Mystery of the Lost Key    

Doubleday Canada

By Clark, Joan Road to Bliss Paperback - September 2009

Leopold Classic Library

Penny Nichols and the Black Imp                  

Zinc Read

Penny Nichols Finds a Clue                      

dtv Verlagsgesellschaft mbH & Co. KG

Eriks Tochter: Roman                            

Independently published

Penny Nichols Finds A Clue: Master of Classic Mystery Comes a Spirited Young Sleuth’s First Thrilling Case