The book "Vacuum Cleaner Systems: A Treatise on the Principles and Practice of Mechanical Cleaning" by M. S. Cooley (Maxwell Stevens Cooley) is an important source of knowledge about cleaning technologies for premises and industrial facilities. In his work, the author examines in detail the principles of operation of vacuum cleaners and their modern modifications, which are used in the cleaning process. The book reveals the main technical aspects and innovations in this field, providing the reader with a deep understanding of mechanical cleaning processes. Thanks to the combination of theory and practice, "Vacuum Cleaner Systems" will be a useful guide for professionals in the field of cleaning and anyone interested in the latest technologies for household and industrial cleaning.