Series I, Correspondence, is divided into Rebecca West Correspondence (boxes 1 to 21 ) and Henry Andrews Correspondence (boxes 22 to 25 ). Each contains incoming and outgoing correspondence. Correspondents with five or more letters, significant correspondents, friends of Rebecca West, and files that contain letters from Rebecca West (mainly carbons or retained copies) or letters of special interest are given separate folders, listed alphabetically. Others are placed in "Letter General" files.