Card catalogues are a collection of cards used to organize and access information about books and other library materials. There are a variety of synonyms for this term, including library catalog, book index, and card index. These different terms reflect the diverse ways in which libraries and other organizations can store and manage information about their collections. Whether you are searching for a specific title, author, or subject, a card catalogue can be an invaluable resource for researchers and casual readers alike. So if you are looking for a book on a particular topic, make sure to check out the card catalogues at your local library or bookshop!