Hi all,
here is a German list on books about stenography/tachyography etc.
http://www.phil.uni-passau.de/histhw/bibliographie/5i.html
and a collection on the 2000 years of shorthand in Dresden
http://home.wtal.de/dresden-steno/stenosam.htm
The got more than 50000 volumns in 52 languages
Cheers
Claus