WorldCat is, in their own words, “the world’s largest network of library content and services. WorldCat libraries are dedicated to providing access to their resources on the Web, where most people start their search for information.” More specifically, for our purposes, WorldCat is a massive catalog that taps into the catalogs of participating libraries to include materials such as books, DVDs, CDs, articles, visual content, and more. The site is often used by library staff to manage ILL requests, but it can be useful for patrons searching for themselves. While library staff would still have to submit ILL requests to an owning library, starting the transaction knowing that the book is available at all elsewhere can be useful. Or, you may discover that a nearby university library holds the item you want. With many universities allowing public access to their stacks, it may be more practical to get the item yourself than wait for the ILL to be processed. WorldCat is a great way to check who else nearby has collected the item in question with fairly little effort and time. Helpfully, WorldCat will indicate to you (in a column to the right on a given item’s page) the approximate distance between you and the libraries with the material. Another great use for WorldCat is research purposes. While your library might have a robust collection, it probably is not entirely complete in any given topic. WorldCat gets you closer to that sense of a complete list because it pulls from so many libraries. So, while your local library may produce 53 items for a keyword search of “cicadas,” WorldCat offers 12,746. It’s not a perfect system and there may be duplicate items listed, but the gulf between 53 and 12,746 certainly promises a good amount of material available in other libraries not available in yours. Even if you don’t end up using the materials listed in the search results, knowing that they exist can be useful for all sorts of research. For example, from a librarian’s perspective, it can be a useful tool for readers’ advisory. In addition to linked subject headings that can direct you to more material within WorldCat that is about the topic of interest, WorldCat also provides space for reviews. While the reviews are not as plentiful as what you might find at Goodreads (though some Goodreads reviews are imported depending on the item), it’s still one more place to get information about the item and better inform what you decide to read next. Users of WorldCat also enjoy a simplified catalog record view. Rather than the coded and complex MARC record system you sometimes get when clicking on, for example, “staff view” in your library’s catalog, you get nearly the same information but in plain English on WorldCat. Find information such as the length of the book, ISBN, target audience, type of material, and more under “Details.” On occasion, you may also discover lists of books around a topic of theme. For instance, this record for A Court of Wings and Ruin links to a list of YA books with a pattern naming convention put together by another WorldCat user. You can create your own lists once you’ve created a free account with the database. So, if you’re disappointed to find your library doesn’t have that obscure book you really need for your exacting garden gnome design, check WorldCat before you give up. You can either use it to give your librarian a heads up that it’s available at another library and you’d like to request an ILL, go pick it up yourself at the owning library if it’s near enough, or find a comparable item that is perhaps more available to you.