Jason Kottke occasionally uses the term The Great Span over at his blog on similar musings: https://kottke.org/tag/The%20Great%20Span

I think his post that really got me was the 2021 headline, The Last Documented Widow of a Civil War Veteran Has Died: https://kottke.org/21/01/the-last-documented-widow-of-a-civi...