Brother Hees hits the nail on its head.

Another place where a "Friends" organization is useful is to serve as subject matter experts about the artifacts. Often, Public Sector Museums are staffed by people with expertise in operating a museum. The Friends can tell them what they have and what it needs for both restoration and conservation.

See anything about RR museums here:

https://drexel.edu/westphal/academics/graduate/AAML/

Phil Mulligan