Crossword puzzle clue "mark twain notably"

Mark Twain, notably

Twain's "The Awful German Language," notably

Twain's "The Innocents Abroad," notably?

Diarist in a Mark Twain story

Mark Twain story that begins "My father was a St. Bernard, my mother was a collie, but I am a Presbyterian"

"___ is an issue of mind over matter.If you don't mind, it doesn't matter." (Mark Twain)

Mark Twain's "The Gilded ___ Tale of Today"

Mark Twain/Bret Harte play