Source : Free On-Line Dictionary of Computing

ALGOL 58
     
         An early version of {ALGOL 60}, originally known as
        "IAL".
     
        {Michigan Algorithm Decoder} (MAD), developed in 1959, was
        based on IAL.
     
        ["Preliminary report - International Algebraic Language", CACM
        1(12):8, 1958].
     
        [Details?  Relationship to ALGOL 60?]
     
        (1999-12-10)