 The Houghton Mifflin edition was released in January or February 1957 , and the Random House edition was released on March 1 . The two editions featured different covers but were otherwise identical . The first edition can be identified by the " 200 / 200 " mark in the top right corner of the front dust jacket flap , signifying the $ 2 @.@ 00 selling price . The price was reduced to $ 1 @.@ 95 on later editions . 
