Professor Emeritus Robert Leisure has written a book, Ultrasonic Spectroscopy, published by Cambridge University Press.  The manuscript emphasizes applications in condensed matter physics and materials science. The work was motivated by his experience mentoring students for over four decades, and his impression of their needs. The book provides complete coverage of the main issues relevant to the design, analysis, and interpretation of ultrasonic experiments.  To see a comprehensive review of the book, please visit: https://doi.org/10.1121/10.0000745.