Nowell-Smith 1967

Simon Nowell-Smith. "THE ‘CHEAP EDITION’ OF DICKENS'S WORKS [FIRST SERIES] 1847–1852." The Library, Volume s5-XXII, Issue 3, 1 September 1967, Pages 245–251, https://doi.org/10.1093/library/s5-XXII.3.245.

• 246-7 The significance of the Cheap Edition lies in the author's revisions. These vary in extent from volume to volume, but are such that no editor of D can afford to ignore them. Of perhaps less significance, but of some interest, are the bibliographical make-up and history of the numbers, parts, and forms which were to form a pattern for similar cheap editions of other authors in the 1850s.
  • whom?
• ...D's undertaking not to include his more recent books immediately in a cheap edition
• 249 On the wrappers of Parts 28-47 it is reaffirmed that, with the completion of the eight titles, 'the cheap edition will terminate', and on Part 48 appear the words 'terminating the cheap edition of Mr. Dickens's works.' Nevertheless by the summer of 1852 the five Christmas books, hitherto only available separately, were adjudged old enough to merit republication in cheap form.