Source : Free On-Line Dictionary of Computing

Lincoln Reckoner
     
        An interactive mathematics program including matrix
        operations, written about 1965.  It ran on the {TX-2}.
     
        ["The Lincoln Reckonere: An Operation-Oriented On-line
        Facility with Distributed Control", A.N. Stowe et al, Proc
        FJCC 29 (1966)].
     
        [Sammet 1969, pp. 245-247].