Yes Nicky is right. If one broadens the category to children's books more generally, one can find examples of series/sequels even back in the 1780/1810 period.
I have just pulled from the shelf two tiny little books with marbled-paper covers that I'd almost forgotten I had. One is called "Frank/In Four Parts/PartIII/ Eighth of the Series of Early Lessons by Maria Edgworth" and is dated 1803. The other is Frank Part IV. I'm not sure if her Harry and Lucy stories (mentioned I think in Little Men) began as a series, but according to Copac they were issued as Practical Education in 1780, and the Copac lists suggest she went on writing others to follow. I'm not so sure about Sandford and Merton being a series, though. Copac lists a number of copies in libraries with the date 1783, and then a 1790 "fifth edition, corrected". There was also an abridged edition "embellished with elegant plates" published in 1790, but no suggestion of anything that could be seen as a sequel. Ellen Jordan University of Newcastle Australia [EMAIL PROTECTED] -- ________________________________________ Girlsown mailing list [EMAIL PROTECTED] For self-administration and access to archives see http://home.it.net.au/cgi-bin/mailman/listinfo/girlsown For FAQs see http://www.club-web.pwp.blueyonder.co.uk/girlsown/faq-0.htm