Looking for Lucas L6A plans.....

Thought I'd toss out a query here, as well as a couple of other sites, looking for these plans. I'd like to find a set of Emile Lucas' L6A plans. The L6S was an all metal, tandem seat motorglider, with several engines between an 80 hp to a an O-235 for power. Lucas passed way several years back, and it seems like no one currently has the rights to the plans. I know that there were quite a few sets sold, but haven't found a set that I could purchase yet. Any leads would be most appreciated.

Craig