In November 1875 Twain gave the manuscript to Elisha Bliss of the American Publishing Company, who sent it to True Williams for the illustrations. A little later, Twain had the text also quickly published at Chatto and Windus of London, in June 1876, but without illustration. Pirate editions appeared very quickly in Canada and Germany. The American Publishing Company finally published its edition in December 1876, which was the first illustrated edition of Tom Sawyer.
These two editions differ slightly. After completing his manuscript, Twain had a copy made of it. It is this copy which was read and annotated by his friend William Dean Howells. Twain then made his own corrections based on Howells comments which he later incorporated in the original manuscript, but some corrections escaped him. The English edition was based on this corrected copy, while the illustrated American edition was based on the original manuscript. To further complicate matters, Twain was personally concerned with the revision of the proofs of the American edition, which he did not do for the English edition. The American edition is therefore considered the authoritative edition.