What is the title of R.E.M.'s 1987 compilation album of B-sides?

The title of R.E.M.'s 1987 compilation album of B-sides is Dead Letter Office.

Released on April 27, 1987, Dead Letter Office gathers outtakes and non-album tracks recorded between the sessions for Murmur and Lifes Rich Pageant. Many had originally appeared as B-sides to R.E.M. singles, while others were previously unreleased or difficult-to-find recordings.

The collection also highlights the band's wide range of influences. It includes three Velvet Underground covers, plus versions of songs by Aerosmith, Roger Miller, and Athens peers Pylon. Guitarist Peter Buck supplied humorous liner notes, giving the release a personal, informal feel.

A common mix-up is Eponymous, a later 1988 compilation focused mainly on R.E.M.'s singles and selected album tracks. And I Feel Fine... is also a compilation, but it covers a much broader period and was released in 2003. Dead Letter Office specifically represents the band's early rarities and B-side era.