I have Lattice C 5.5 in its original box, complete with manuals, that I have been thinking of selling. Not v5.6 but the manuals should still be relevant. I don't remember how many manuals it came with, or the editions but can check in the next few days. Also, it is quite heavy so I don't know if it is economical to send to France.
I also have a boxed Hisoft C (the interpreted one) with a manual which covers some of the library calls, although not with much detail.
Send me a PM if you are interested.