The quest to find this in the US (near me or from anyone) seemed fruitless, until......yes, someone contacted me and because of her love for the same above item, started as a distributor. She found me through a couple "desperately seeking postings" and Etsy. Weird but true. She even, which this I haven't seen anywhere, explains hook sizes to use for the different sized thread, as well as what each size is comparable to with regular thread.
No, I haven't ordered yet, but will when I get back home.
Here's her link.
Now, onto my quest for Sinfonia Cotton Yarn.....