Ann Folsom wrote in asking how to find a good (best?) place for your collection of possibly historically useful artifacts. I condensed her questions in these two:
1. How do you find the "best" place for your collection of artifacts from another time? Is there a strategy to match your collection with an interested buyer / acquirer? That is, how would you find a good home for your collection?
2. If you're searching for archival materials to acquire, what's a good strategy for finding them? (As an example, what's the best way to find archival piano rolls to acquire? How about old oak library card catalogs?)
Lastly, don't forget that great frictionless supply/demand service, eBay. If you can find the items in your collection there, you've got a good sense for (a) whether anyone else finds it interesting, and (b) other terms to describe your object.