@Rich It's not too hard to find sets of Jepp charts from bygone years on eBay and there are archives online where you can find old charts, but usually a bit older. You'd have to do legwork converting that to digital information you could use in sim, of course, but the data are out there.
Additionally, a freeware package circa 1958 was recently released on flightsim.to that accomplishes this same goal. It's too early to be super relevant to JFs current product lineup -- you really would want something from the 80s I think -- but it shows that it can be done. https://flightsim.to/file/71888/golden-age-of-air-travel-u-s-navaids-as-of-1958
They've used some archived sectionals, etc. from the Library of Congress.
Some examples of what you can find on eBay:
https://www.ebay.com/itm/276402321024
https://www.ebay.com/itm/276403704780
https://www.ebay.com/itm/335236352094
https://www.ebay.com/itm/266624124286
Obviously you're not going to get a 100% complete set of procedures for the US or elsewhere piecing things together from eBay listings like these, but occasionally you do see more complete sets of charts come up for sale on eBay.
I would be surprised if Jeppesen doesn't have an archive of some kind?