Two albums were released in 1999 and 2000, Mermaid Avenue and Mermaid Avenue Vol. II,. The new collection will collect both albums plus a third volume with 17 previously unreleased recordings from those sessions, the 1999 documentary on the sessions, Man in the Sand; and a 48-page booklet with new liner notes by Nora Guthrie, lyrics, archival photographs, and facsimiles of lyric sheets and sketches by Woody Guthrie.
The collection is titled Mermaid Avenue: The Complete Sessions and is due out April 21, 2012. You can pre-order a copy directly from Bragg via his website.