This volume serves as a comprehensive bibliographical record of the musical publications issued by the London firm of John Walsh between 1721 and 1766. The authors, William C. Smith and Charles Humphries, utilize extensive archival research to catalog the output of one of the most significant music publishers of the eighteenth century. This work functions as a critical reference tool, providing a structured framework for identifying and dating musical editions from this specific historical period.

Experts and music historians regard this work as a foundational reference for the study of eighteenth-century music publishing. Scholars frequently cite the text for its meticulous attention to detail and its utility in dating primary source musical scores.