I just did a serach on Hancock of Paducah and Fabric shack and didn't find anything white on white in a batik. Have you checked into doing a search for Hoffmans Watercolors batiks??
You know the 16th Annual Quilt run is coming up. There is a list of 24 stores in So CA you could do a search on and find their e-mail and request if they have any. It will take time or you could call them, the Phone numbers are listed.
www.quiltersrun.com