A murder mystery book written in German by Günter Rudorf.
The title of the book is in German "Mord per Rohrpost", translated into English it will be "Murder per pneumatic tube system".
Mord per Rohrpost
Last updated: 31-01-2019
1 March 1893 (126 years ago) Commissioning Pneumatic Tube Mail Philadelphia USA
4 March 1899 (120 years ago) Commissioning Pneumatic Tube Mail Prague, Czech