Why does the phrase "The Bucket List" show a increase in popularity around 1900 ...

I just watched the movie The Bucket List, in which one character explains to another what the expression in the title means. It was interesting to me, because I did not know that the expression has such a brief pedigree.

And I've since read another article here about the expression.

But I also looked at the Google Books ngram for the expression, where you see that remarkable surge in the use of the expression around the time of the film's release.

But what was going on in 1900? Compared with the interesting condition around the release of this particular film, it's easy to overlook the mere baby bump one century earlier.

Was there a comparable event that popularized the expression at that time? What did the expression mean to that generation?

Looking through the Google hits for pre-1920's usage of "bucket list", most valid hits of the phrase (that don't span a sentence or punctuation break) seem to refer to a literal of list of buckets advertised for sale or referenced in spec sheets, as in an elevator-scoop type bucket used in the booming coal mining industry at the turn of the 20th century (as seen here).

If you turn off smoothing in the ngrams plot, it becomes clearer that this isn't a trend persisting over a decade, but isolated usage restricted to 1900 and 1901 only. Also worth noting that many of the hits that ngrams returns are false - examining just a few pages of hits, we find books attributed to the wrong year, entries mis-processed with OCR, and adjacent words that span sentences/punctuation and are not an example of the phrase itself.