Not sure if this question is appropriate here but I believe that it is of some interest for the db2:ers of the site.
Once upon a time the DB2 Cookbook by Graeme Birchall could be downloaded from:
The account seems to be closed, does anyone know if these are hosted elsewhere by the author or by anyone else? I believe that the pdf's where a great contribution for the DB2 community so it is a pity to see them gone.
For 9.7 they can be downloaded from: db2hub.com/freebies Does the cookbook exist for later versions?