A History of Haskell: being lazy with class

"A History of Haskell: being lazy with class", Paul Hudak (Yale University), John Hughes (Chalmers University), Simon Peyton Jones (Microsoft Research), Philip Wadler (Edinburgh University), The Third ACM SIGPLAN History of Programming Languages Conference (HOPL-III) San Diego, California, June 9-10, 2007.

Abstract This long (55-page) paper describes the history of Haskell, including its genesis and principles, technical contributions, implementations and tools, and applications and impact.

Paper: PDF (1Mbyte) and Postscript (8Mbyte)
Video of the talk (630Mbyte). The video starts a minute or so into the talk, but nothing important is missing.

You might also be interested in Simon's POPL'03 talk: A retrospective on Haskell.