This book serves as a comprehensive catalog of the early books collected by William Loring Andrews and housed at Yale University Library. It details the historical significance and bibliographical information of each item within the collection. The work aims to document and preserve the legacy of early printed materials, providing a scholarly resource for bibliophiles and researchers.

This catalogue is a specialized scholarly work, primarily of interest to bibliographers, librarians, and collectors of rare books. Its value lies in its detailed documentation of a specific historical collection. The facsimile reprint ensures accessibility for those studying the history of printing and book collecting.