Kalisz Area Maps

[Mahatatain]

I'm wondering if anyone can help me with detailed maps for the Kalisz area that are pre 2000 and available in an electronic format? I'm looking to start a new online Escape from Kalisz scenario and I'd rather not use Google Maps as a reference point.

I've tried the University of Texas at Austin website as their maps of Vietnam are incredible (presumably a legacy of the Vietnam War) but they don't have anything as detailed for Poland, specifically the Kalisz area.

I therefore wondered if anyone here had had any success in finding appropriate maps of Poland/Kalisz area in something like 1:50,000 to 1:250,000 scale? My presumption is that something would have been produced during the Cold War.

Any help would be appreciated.

Thanks,

Mahatatain.