The A side of this audiocassette is labeled "Konzert Für Schlagzeugsolist und Orchester op. 67," and the B Side is labeled "1. Violinkonzert op.40." The audiocassette case is also labeled with information about the music and performers.
The papers consist of Filippov's correspondence with Russian émigré literary figures and scholars, typescripts of Filippov's writings (poetry, prose, critical essays), materials for works edited by Filippov as well as writings by others not included in works edited by Filippov; and artwork by Serge Hollerbach for books edited by Filippov.