found: Crowley, T. How to play the Irish uillean pipes, 1974.
found: OED(Union pipes)
found: Britannica 14(Union pipe)
found: Na Píobairí Uilleann (The Uilleann Pipers) WWW homepage, Dec. 6, 1999(The Society of Uilleann Pipers known as Na Píobairí Uilleann (The Uilleann Pipers) was founded in 1968 at grassroots level by pipers themselves. The aims of the society are to perpetuate the spirit of the music, in particular the playing of the pipes and the production and maintenance of the instrument itself. One of the treasures of Irish Culture is its traditional music and one of the treasures of this music is the Uilleann Pipes)
found: Britannica Online:"Ireland", Dec. 6, 1999 (uilleann pipes (Irish bagpipes))
found: Grovemusic WWW site, May 2, 2006:Uilleann pipes (Bagpipe: the Irish uilleann pipe is a bellows pipe, played sitting and with the drones lying across the knees)