The relationship between cats and libraries goes back hundreds of years. Mice have been notorious for destroying the pages of books and manuscripts. Libraries used cats as an effective means of rodent control. However, once libraries adopted cats, they became more than dedicated mousers, they became furry friends A typical library cat can go from patrolling the stacks one minute to plopping in a lap the next. Cats serve as library ambassadors, helping to make libraries not only pest-free, but also a happier environment. Read about library cats from the past, including: Christopher Gore from the Harvard College Library in Massachusetts (1890s); Portia from Oregon's Portland Public Library (1900s); Kim from the Lockport Public Library in New York (1920s); Punky from Missouri's Moberly Public Library (1930s); and Riley from the El Paso Public Library in Texas (1940s). The book takes the reader on a journey from past to present library cats. Over 150 library cats from across the United States and beyond are mentioned. Years pass and library cats retire or pass away. Their existence slowly disappears from library websites and public mention. New cats step in and steal the hearts of patrons and employees alike. This book is a tribute to their rich history.