Harry Sparnaay was a major contributor to the development of unaccompanied works for the bass clarinet and commissioned over 100 pieces for bass clarinet alone. While Sparnaay's book, The Bass Clarinet: A Personal History, includes a list of works written for him, there is minimal information available regarding most of these pieces. This project fills the information gap for this repertoire by providing publication status/score availability, performance challenges, recording history, program notes, and composer information. Each work is classified into three categories based on its publication status and recording history, providing a framework for understanding which works have entered the standard repertoire for the instrument.