“Manual of Library Economy” by James Duff Brown and W. C. Berwick Sayers is a scholarly work that delves into the intricacies of library management and organization. Brown and Sayers provide a wealth of knowledge on the principles and practices of library science. This book is an essential reference for librarians, educators, and anyone interested in the administration of libraries. It offers insights into the history and development of library systems, making it a valuable resource for those in the field of library science.