Thought you might like this link. I haven't seen these pages before and janyx kindly sent me this:
I just found this link http://www.sam78.cz/apr_list/index.php
. There are many(380) Czechoslovakian model plans here. Not in scale, but all dimensions needed for building. Hope you like it.
They seem to be all one page (8 x 10?) scans, but at quite good scan quality, and there are lots of interesting models.
Here's a couple of thumbnails at random - 1949 G-Sokol and 1947 Brewster Buffalo