David Wells The Penguin Dictionary Of Curious And Interesting Numbers (Penguin Press Science)

David Blatner The Joy Of Pi (Penguin Press Science)

David Macey The Penguin Dictionary Of Critical Theory (Penguin Reference Books)

David Hinds-Howell The Penguin Dictionary Of English Idioms (Penguin Reference Books)

Brown, William Wells The Power Of Sympathy And The Coquette (Penguin Classics)

Peter Murray Dictionary Of Art And Artists, The Penguin (Reference Books)