There still seems to be some misunderstanding between these concepts. Here's what I know:
Tone is the author's attitude toward what he is writing.
Twain is often satirical. Cisneros is nostalgically hopeful. Achebe is pedantic. Shakespeare is tragic with Macbeth and Hamlet. Frost is reflective.
Mood is the emotional response the author hopes her audience will experience.
Tim O'Brien creates a mood of confusion in The Things They Carried. Shakespeare creates a mysterious supernatural mood with his use of ghosts and witches. Billy Collins creates of mood of nostalgic naivete.
Tone is in the author.
Mood is in the audience.