Polish steam-locos in Germany during WW II

Komentarze:
: Hi! : I need some help in finding out about the identity of some polish steam-locomotives which were used : by the German Railways during 1939-1945. I have only little information, so I know that e.g. german : "56 3843" formerly has been "Tr 20-158", but I still found out only a little number of those changes. : Is there any list or book (or web-site) where I can find more about it? I'm very interested in the dates : of these locos, like manufacturer, year of manufacturing and number of chassis. : Any information, even about a single loco might help. : Greeting from North Sea Coast, : Thomas