After the success of Alice’s Adventures in Wonderland, Carroll announced already in 1866 that he was planning a sequel but did not start to work on the project until two years later. He then started to look for an illustrator; Tenniel initially refused to illustrate another book for Carroll, but was eventually persuaded to do it. He had much more influence than during the first set of illustrations for Alice’s Adventures in making suggestions with regard to the omission of a whole chapter. After her encounter with the White Knight in Chapter 8, Alice was to meet “The Wasp in a Wig”. Tenniel found that the chapter didn’t “interest [him] in the least” (Gardner 297; facsimile …
Zirker, Angelika. "Through the Looking Glass and What Alice Found There". The Literary Encyclopedia. First published 20 May 2008; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=9726, accessed 18 April 2015.]