MAD LOVE...

Love in Lancaster County, PA... A very nice online exhibit of love letters

My Precious Loulie.... love letters from the Civil War, University Libraries, Virginia Tech

The Age of Emotion... fascinating records from the Cumbria County Council Archives

How to Write the Perfect Love Letter... from WriteExpress

Some library love... from Lifehacker

UPDATE: Fast Facts about Love, from the U.S. Census

Valentine sent to "Nancy Ann" from Rusty Garcia, the Tomeo collection