Ghostly Historian

Imagine a ghost who haunts a historical museum and serves as a guide to the past.

This ghost would have seen countless epochs unfold, bearing silent witness to the unfolding of history. What stories could such a ghost tell? Who do they interact with, and how do they interact with them? This prompt asks you to delve into the avenues of history, and weave a tale of a ghostly curator whose existence is intertwined with the artefacts they preside over.