Charlie and the Chocolate Factory

The copyright page states 'FIRST EDITION,' but the decisive first-printing point is the colophon on the last printed page: a genuine first printing has a SIX-line colophon whose final line reads 'Paper manufactured by S. D. Warren Co.'; later printings drop that sentence, leaving a FIVE-line colophon (the 'First Edition' wording can persist, so verify the colophon)