Hi Jon,
Though I'm unaware of any available ZBS design books, Jindrich, a highly knowledgable Czech glass enthusiast and researcher, has got a fabulous website which offers information on Czech glass designers, glassworks, schools, exhibitions, copies of the Czechoslovak Glass Review, catalogues... the list goes on and on:
http://www.cs-sklo.cz/Also, Pamela offers a collection of catalogues, organized by country, on her Musterbuch site, which may be of interest, if not for your vases posted above, then for other pieces you may come across:
http://www.glas-musterbuch.de/h2-glas-br-musterbuch-de-h2.26.0.htmlI agree with Michael... photos of the whole vases would be useful. :hi: