This category lists map libraries and collections throughout the world. These libraries have digitized varying amounts of their printed map collections for viewing online; some sites display a few sample images, while most only provide descriptions of and guides to their holdings. If you are looking for online maps, a better place to start is one level up in the hierarchy at Reference: Maps. Sites in this category are listed according to institution name. The John R. Borchert Map Library at the University of Minnesota, for example, is listed under "U". You can also conduct a search restricted to this folder. For example, you can search for "California" and choose "only in Maps/Libraries" to find the listed Map Libraries with "California" in the title or description, or even "au" to show sites containing the Australian domain name.