Looking for an older version of NLH

[Northstar78]

Hi,

Does anyone have a link to an older version of NLH like 6.1.1 or 4.2 I can download? I do remember using these ones a couple of years ago when I was working on some maps in NILE and found them quite useful. The problem is that I can't find them anywhere anymore and I'm currently stuck using the 3.8 version which I have to make due with for now. If someone were to help me out I'd be grateful.