It is on the record that the speech was written by them rather than written "with their assistance". Obviously MLK would have had input (and veto). There was a

It is on the record that the speech was written by them rather than written "with their assistance". Obviously MLK would have had input (and veto). There was an interesting interview with one of them on British TV last year and he said as much particularly he claimed the "I have a dream" part.