Websites
Is Dickinson a "neurotic poet"? We don't like when people explain away genius as some kind of mental eccentricity, but it's an interesting site nonetheless.
Check out two brief but very useful biographies of the poet.
This site has promise, but it's a little hard to navigate. But once you look around, you'll great find links to Dickinson's letters, writings by her family members, and articles by professor-types.
Audio
The New Yorker has a little fun with Ms. Dickinson and sound effects.
Listen to an actress perform Dickinson poems and letters.
Images
Here's a new(ly-discovered) picture of Dickinson.
Nice digs, Em. We can see why you might not want to leave.
Books
For all you Dickinson nerds, this is the latest in Dickinson scholarship, and you can access each issue online. (You will need a library or university account to log in.)
Dickinson's letters are amazing, and some of them are harder to figure out than a Sunday Sudoku puzzle. Check out the letters addressed to some unknown person whom she calls her "Master."