"We decided on instinct almost, that it was the right image for the record, but the intellectual reasons I haven't quite sorted out in my own mind. It has a spiritual aspect which this record has, and also a great deal of mystery which I like."
- The Edge on cover image for The Joshua Tree
'40' from the War album almost was never recorded. The band (minus Adam Clayton who had left the studio) had gone over their booked studio time, but convinced the studio manager to let them record '40'. It has closed many show since. The Edge plays both electric and bass guitar on the song.