The Audio Recordings series consists of 11 cassettes and 2 magnetic tapes, including recordings of performances, rehearsals, compositions, and personal content. These recordings offer a deeper insight into Kouguell's musical career, collaborations with other Queens College musicians, and relationships with close family members.

The Music Manuscripts series include manuscripts written by Kouguell's father Arkadie Kouguell, Leo Kraft, and other composers, some of who dedicated their works to Kouguell. The manuscripts include Alexander Kouguell's notes and compositions that he wrote himself.