Need a particular song or arrangement? Checkout www.sheetmusicplus.com, (opens new page) they have one of the largest selections of music books and sheet music available anywhere. Their site also has good search facilities to find what you want, AND include content indexes for most their music books.
Play Gypsies-Dance Gypsies
Harry B. Smith
Play Me Hearts and Flowers (I Wanna Cry)
Mann Curtis, Sanford Green.
Play Orchestra Play
Play That Barbershop Chord (Mister Jefferson Lord)