I am interested in identifying museum or heritage collections that represent a single historic event or moment, recovered and stewarded under one authority with comprehensive provenance and chain of custody. Something that is more of a complete time capsule rather than a representative sampling.
I am particularly interested in if any colleagues are aware of collections analogous to that of RMS Titanic Inc. As salvor-in-possession of the Titanic wrecksite, their collection is derived from one historic event, mostly complete/wholistic when compared to the available content and the definition of the collecting mission, unified under a single stewarding authority and managed as an intact archeological/historic collection.
Another example would have been Henry Darger's art collection. When his work was discovered there was a moment where it could have all stayed together and been one collection with a single, complete 'closed loop.' However, the apartment contents largely are having gone to the Intuit Art Museum and his actual artwork sold/spread to museum collections and private collectors there is now no single authority tracking and stewarding the collection.
I'd greatly appreciate examples or references you think may be similar or close in form. Thank you for considering!