This sub-series comprises a collection of William Klenz's research note card sets. It includes Klenz's bibliography, encompassing a list of books he published, contributed to, and edited. The sub-series also houses Klenz's research notes on various music composers such as Johann Sebastian Bach and Wolfgang Amadeus Mozart.

This sub-series comprises a collection of William Klenz's research note card sets. It includes Klenz's bibliography, encompassing a list of books he published, contributed to, and edited. The sub-series also houses Klenz's research notes on various music composers such as Johann Sebastian Bach and Wolfgang Amadeus Mozart.

This sub-series comprises a collection of William Klenz's research note card sets. It includes Klenz's bibliography, encompassing a list of books he published, contributed to, and edited. The sub-series also houses Klenz's research notes on various music composers such as Johann Sebastian Bach and Wolfgang Amadeus Mozart.