Series I. Correspondence and Personal Papers contains letters, postcards, poems, and photographs dated 1952-1989. Autograph letters from Guy Debord to Bernstein, the bulk of which date from 1963, discuss the preparation of Internationale situationniste publications, the writing of Debord's La société du spectacle, Debord's daily life, and the activities of various collaborators including Asger Jorn, Raoul Vaneigem, and Patrick Straram. Manuscript poems include Épopée Léwinienne, a series of love poems by Debord addressed to Bernstein in early 1964, at a time when, separated from Debord, Bernstein began a relationship with French journalist Walter Lewino. Photographic prints, largely informal portraits during social gatherings, depict Bernstein, Debord, Jean Michel Mension, Jean Claude Guilbert, members of Gruppe SPUR, Jacques Fillon, Alice Becker-Ho, and Michèle Mochot.