This sub-series includes William Klenz's musical compositions for instruments, mostly quartets and sonatas. It includes preserved microfilms of the musical compositions. The files also have plays and folk tunes set for solo instruments, like Violin and Piano, adding a variety of Klenz's work in instrumental music.

This sub-series includes William Klenz's musical compositions for instruments, mostly quartets and sonatas. It includes preserved microfilms of the musical compositions. The files also have plays and folk tunes set for solo instruments, like Violin and Piano, adding a variety of Klenz's work in instrumental music.

This sub-series includes William Klenz's musical compositions for instruments, mostly quartets and sonatas. It includes preserved microfilms of the musical compositions. The files also have plays and folk tunes set for solo instruments, like Violin and Piano, adding a variety of Klenz's work in instrumental music.

This sub-series includes William Klenz's musical compositions for instruments, mostly quartets and sonatas. It includes preserved microfilms of the musical compositions. The files also have plays and folk tunes set for solo instruments, like Violin and Piano, adding a variety of Klenz's work in instrumental music.