What use is the stuff that went on 60 years in the past when most people involved with it are dead and a lot of the knowledge has been lost in the meantime?
I remember picking through an aerospace scrapyard in North Hollywood a decade ago with extremely-talented launch engineers (and entrepreneurs). The aim was to look at parts, measure them and figure out why they were built like they were. We looked, a little, at stuff like nozzles. But mostly we focussed on bolts, joiners, turbine blades and the like.
Down to the fact that the Eastern Roman Empire was going strong.
Even in 2014, when I was in North Hollywood, SpaceX was carrying the torch.