folded instructions old sets

[mwyns]

I recently bought set 852 (helicopter) and saw that the instructions are printed on some sort of poster in stead of a booklet.
I am looking for the folded poster instructions of sets 851 and 853 that were issued in 1977. From 1978 these were replaced by a booklet with more detailed instructions. If someone has this it would be nice if you could make a good photo or scan of it.
From set 850 I found these online at brickfactory.info

Here is an example of 851 I found online in bad quality.