A recording of the KCRW Morning Becomes Eclectic session Sonic Youth did in 2002, contains an interview focused very much on the effects 9/11 had over the band's dynamic as a creative entity (remember that the studio was located on the devastated area), and also as individuals:
http://www.sonicyouth.com/gossip/sho...postcount=1058
The chapter about the "Murray Street" album on David Browne's biography, "Goodbye, 20th Century", includes detailed narrative of Jim O'Rourke's particular experience.