Source : Free On-Line Dictionary of Computing

MATHLAB
     
        Symbolic math system, MITRE, 1964.  Later version: MATHLAB 68
        (PDP-6, 1967).
     
        ["The Legacy of MATHLAB 68", C. Engelman, Proc 2nd Symp on
        Symbolic and Algebraic Manip, ACM (Mar 1971)].
     
        [Sammet 1969, p. 498].