Pamela - a sugar, cream jug and tray in this pattern are shown in the Musterbuch VMG / Walther 1931, tafel 128a, as shown in PK 2003-2-1. The cream jug shown is identical in shape and pattern to my water pitcher.
The water pitcher is also shown in the 1928 catalogue Sachsische Glasfabrik Radeberg, where it was given the name "Gertrud" - the tumbler shape (becher) was listed but not shown. Source PK 2004-3.
This pattern is known by Carnival Glass collectors as Hobstar and Shield.
I give the above information regarding the Radeberg and Walther sources, in "Carnival Glass, The Magic and the Mystery 2" (2008) which is what Dave Doty is alluding to when he mentions me.
Glen