Pinnacle paperback edition of original 1961 publication. 1."Introduction, by Anthony Boucher 2."The Adventure of the Mazarine Blue" 3."The Adventure of the Hats of M. Dulac" 4."The Adventure of the Mosaic Cylinders" 5."The Adventure of the Praed Street Irregulars" 6."The Adventure of the Cloverdale Kennels" 7."The Adventure of the Black Cardinal" 8."The Adventure of the Troubled Magistrate" 9."The Adventure of the Blind Clairaudient" 10."A Chronology of Solar Pons", by Robert Patrick