WorldCat This link opens in a new windowCatalog for libraries throughout the U. S. and some European libraries. Find books, government documents, audio and visual material, archival material, titles of journals but NOT journal articles. You can see which libraries have the materials, and then link to them directly to get call number, availability info. You can also link directly to interlibrary loan. For this reason, some use this rather than CMU's own catalog.