While at Reaching Forward South last week, I met someone from the Lincoln Trail Library System who is involved in a project called PolyTalk.
PolyTalk is a volunteer group from Illinois libraries that provide translation services between patrons and library staff. They set up schedules so that when you have someone in your library who doesn’t speak English, and you don’t have someone who speaks their language, you can call them and have your conversation translated.
Also, their list of vendors that specialize in foreign-language materials is worth a look (scroll down the page).