Thanks Rick! The Po-2 is right up there at the top, as I suspected. Just couldn't make up my mind which small civilian aircraft would have been produced in greater number. The Cessna 172 makes total sense, of course.
Ron, you do remember the Ford production lines of the B-24, right? Sections made all over your country, and assembled in a number of places. For beautiful photos, see these albums in the gallery:
http://www.papermodelers.com/gallery...ry.php?cat=531
http://www.papermodelers.com/gallery...ry.php?cat=530
Although they depict the transport version C-87, these colour slides certainly are something extra!
Leif