Bastogne maps

Hello everyone, first post here.

I am working on a project on the battle of the bulges, more specific of the battle for Bastogne and its southern surroundings. I am looking for maps, any maps, that could provide me some information on the terrain around bastogne; hills, rivers, other towns, positions when the counter-attack from the allied started, after the siege of Bastogne began.

If anyone has some links to websites, or any maps that could help me out, it would be greatly appreciated.

 

Here is a good place to start. Department of History - WWII European Theater

 

Pardon my ignorance, but what are the green books?

Thanks for the link, will look in there for sure!!

 

Here you go.;
Zoomable GSGS1:50,000 map of Belgium courtesy of the National Library of Scotland.

 

Thank you all for your help!!