From the sound of your description of the patterns, it sounds as if the beadwork/beadweaving created the "material" that became the garment. Kind of like knitting in the fact that you create the "material" in the shape that you need. Is this correct?
Only a couple pokes for you....
Try Ornament Magazine (ornamentmagazine.com) since your patterns sounds a good deal like "Artwear." With them though, you really need to be specific. The worst that they can say is no.
Also, try "thefind.com" and keep fine tuning your specs. Since you mention leather lacing, you might just find it under macramé. Beads & leather lace just might mean macramé to the classifier no matter what it really is in real life.
Did you find the patterns in a magazine? Hand-out at a store? Was it one of those pattern booklets that have only a few items/patterns on a subject? (Like a macramé booklet for creating 6 kinds of 2-tiered plant hangers....yes,I still have mine from the early seventies.) Any/all of these tacky details help.
I hope these pokes help. I'll keep an eye out for: (D) All of the Above. 
Please let me know if any of these leads help and any more tacky details to aid in the quest.
Netta