Selected Letters of John Updike

The Letters of Abelard and Heloise (Penguin Classics)

The Adams-Jefferson Letters: The Complete Correspondence Between Thomas Jefferson and Abigail and John Adams

I'm Left Handed: Letter and number tracing book made specifically for left handed children. With added illustrations for coloring. Ages 3+.

The Poet and the Silk Girl: A Memoir of Love, Imprisonment, and Protest

Little Letters for Lunch: Keep it short and sweet.

A Literary Letter for Every Day of the Year

My Dearest Friend: Letters of Abigail and John Adams

Letters to a Young Poet

Arthur Rimbaud: Complete Works: An Influential Poet's Biography―Visionary Poetry, Prose, and Letters Translated by Paul Schmidt (Harper Perennial Modern Classics)