Based on the compiled letters between poets Robert Lowell and Elizabeth Bishop, Sarah Ruhl expresses the beauty in simple correspondence. Between 1947 and 1977, they exchanged more than four hundred letters. Describing the writing of their poems, their travel and daily illnesses, the pyrotechnics of their romantic relationships, and the profound affection they had for each other, these missives are the most intimate record available of both poets and one of the greatest correspondences in American literature.