There must be indeed. I have, and have only ever read, the Knopf 1964 hardcover, which I believe is the first American edition, and this is on page 73:
"Their skin is almost black!" "So it is!" "You know what I think, Grandpa?" cried Charlie, "I think Mr. Wonka has made them himself -- out of chocolate!"
And at the bottom of the page, an illustration by Joseph Schindelman of five very dark Oompa-Loompas, dressed in what look like short white togas.
You write of "several pages to unwind, pages in which nothing interesting happens," which makes me think there must be multiple editions of the ending is well, because in my copy the ending is very fast and action-packed. The Oompa-Loompas' elegy to Mike Teavee ends on p. 149, Wonka says "you've won!" on the same page, pushes the UP AND OUT button on p. 151, spends pages 153-6 looking at the other children leaving, offers Charlie the factory on p. 157, insists on bringing his relatives along on p. 158 ("There's no time for arguments! We must go at once and fetch the rest of the family -- Charlie's father and his mother and anyone else that's around!"), crashes through their roof on p. 159, gets everybody in the elevator on p. 161, and the story ends at the top of p. 162. At a guess the whole sequence is less than 3000 words.
Re: Different editions?
"Their skin is almost black!"
"So it is!"
"You know what I think, Grandpa?" cried Charlie, "I think Mr. Wonka has made them himself -- out of chocolate!"
And at the bottom of the page, an illustration by Joseph Schindelman of five very dark Oompa-Loompas, dressed in what look like short white togas.
You write of "several pages to unwind, pages in which nothing interesting happens," which makes me think there must be multiple editions of the ending is well, because in my copy the ending is very fast and action-packed. The Oompa-Loompas' elegy to Mike Teavee ends on p. 149, Wonka says "you've won!" on the same page, pushes the UP AND OUT button on p. 151, spends pages 153-6 looking at the other children leaving, offers Charlie the factory on p. 157, insists on bringing his relatives along on p. 158 ("There's no time for arguments! We must go at once and fetch the rest of the family -- Charlie's father and his mother and anyone else that's around!"), crashes through their roof on p. 159, gets everybody in the elevator on p. 161, and the story ends at the top of p. 162. At a guess the whole sequence is less than 3000 words.