How does the author's use of first-person point of view affect the
mood, or emotional atmosphere of the story? In what way is this mood
surprising?

When writing in first-person, the story the author is telling becomes much more personal, and therefore makes readers feel their emotions much more than if a narrator was describing the way a person in the story felt.

mark twain, real name samuel langhorne clemens, was an american writer, humorist, entrepreneur, publisher, and lecturer. among his novels are the adventures of tom sawyer and its sequel, the adventures of huckleberry finn, the latter often called "the great american novel". wikipedia

they are called librarians..

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