Mike, I asked the person with the amber/peachy frosted face jug, and I'm afraid he didn't know who produced it. He's sold it now (he's got a shop selling mainly 20th Century glass) and presumed it was possibly Czech. He said he'd seen a set of harlequin (assorted colours) tumblers, of which you have one - so you can look out for the others at least.
I didn't realise the face jug I saw was actually for sale, so I'm a bit disgruntled that I missed it - as I'd picked it up and admired it - I think they're great. If you do find any information on your items, perhaps you could drop us a line here, and I'll do the same if I find anything out.
