This collection of images from David Seymour has numerous sets displayed by year ranging from the 1940s to the 1960s.
The ones of most likely interest are about halfway down the page and include photos taken in the late 1940s from Poland, Germany and Czechoslovakia amongst others. There's a few photos of the remains of Warsaw.
http://www.magnumphotos.com/Catalogu...d-Seymour.html