Mrs. Stokes' Letters is a quest located in the underground shelter in the Garden District. It is started by reading Mrs. Stokes' Letter 1 which is sitting on a table near Mrs. Stokes. Mrs' Stokes Letter 2 can be found when searching her body.
"Does she remember me, do you think? She was so young. Practicing her bitte dankeschoens. I wonder where they took her. And why she stopped writing."