See the "Group Multiple items for a single condition" item on fellow MVP
Cindy Meister's website at
http://homepage.swissonline.ch/cindymeister/mergfaq1.htm#DBPic
Or take a look at the following Knowledge Base Article
http://support.microsoft.com/default.aspx?scid=kb;en-us;211303
http://www.knowhow.com/Guides/CompoundMerges/CompoundMerge.htm

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Hope this helps.
Please reply to the newsgroup unless you wish to avail yourself of my
services on a paid consulting basis.
Doug Robbins - Word MVP
> I'm printing a "directory" using mail merge and have multiple headings in
> the
> db that should only print once (at the top of a chapter) in the directory.
> Anyone know how to suppress multiple printings without editing the db?