is referenced in this Perry article http://www.sailingmagazine.net/perry_cc39.html
on the 39. The brochure for the original 39 (not a Landfall) is on http://www.cncphotoalbum.com/
I don't think they made many 39's, I've never seen one to my knowledge and didn't remember one had existed. It looks like the same design as the 30 Mark I and 35 Mark II, both of which have excellent reputations.