Thanks to those who responded to my query in re: ways to organize
Twain's fiction and non-fiction "shorts".

Here's another one:

I've found a Project Gutenberg  website containing many Twain
newspaper articles from 1862-1881 collected from several newspaper

The collection was placed on the PG site in Australia because the
compiler wasn't sure if the articles were still under copyright
protection in the US.

Am I right in concluding that there is NO copyright protection for ANY
work published over 95 years ago?

Here is the excellent compilation: