Soprano, alto, and tenor part books for music to the Liturgy of St. John Chrysostom by an unknown composer. Bass part book is missing.

Soprano, alto, tenor, and bass part books of choral compositions and choral arrangements of Ukrainian folk songs. Many are attributed to known composers (e.g. Leontovych, Koshyts', etc.), but some do not have any indication of composer or arranger.

Arrangements of 14 Ukrainian folk songs for three part male chorus. Most of the arrangements are unattributed.

Duets for soprano/alto, soprano/tenor, and tenor/baritone.

Solos for soprano, tenor, and baritone. These solos may have originally had instrumental accompaniments that have now been lost.

Scores and individual parts of folk song arrangments, as well as liturgical music that has been copied out in a different hand. It is not clear if the latter is material assembled by Boshko, or was inserted by a previous archivist.