Begin browsing at call number 492.49. Much of the collection is housed in the Main Stacks and the Literatures and Languages Library.
To browse all Yiddish-language materials in the UIUC Library, regardless of location, use the online catalog's Advanced Search and use the language limits to select "Yiddish." You can then explore the search results using the limiters listed in the right hand navigation bar, such as "topic," "region," and "genre."
To search for Yiddish-language materials held by other libraries, use WorldCat (the classic version, which works better for language-specific searching than the version at Worldcat.org). Under the language limit, select "show all languages," then select "Yiddish." You must also enter at least one search term. Use the Interlibrary Loan option to borrow materials not held by the University of Illinois.