I have to hold a lesson for B-Trainers about the law of chess, and I have to tell them what has changed in the last years. While I’m quite sure that I can teach the actual LoC (that’s what I regularly do), I cannot remember older versions in every detail. FIDE rules commission has an archive, but my browser shows me only a blank page for the 2014 LoC. Can someone provide a readable link to the archive?
I think this is what you want. The last one, specifically, however, it is worth putting in the others, which are useful.
This site appears to have old rules of chess, FIDE and otherwise
I do not attest to the accuracy or completeness of this site
The only source I know is The Retro Corner. Unfortunately, it hasn’t been kept up to date, but together with the FIDE site itself, it should give you coverage back to 1977.
The rules are hardly perfect, but there have been continual improvements in writing quality over time. Specific changes have mainly been in various kinds of draws, and filling various funny holes (e.g. Pam-Krabbé castling).
For further back than 1977, I would approach a proper chess historian. Hope this helps.