"IBM's Organization for Programming" 9.7 pp 349-356

C.J. Bashe, L.R. Johnson, J.H. Palmer, and E.W. Pu (1986) C.J. Bashe, L.R. Johnson, J.H. Palmer, and E.W. Pugh "IBM's Early Computers" MIT Press, 1986 (Vol. 3 in the History of Computing series)  

Languages mentioned SOAP {1955} Symbolic Optimal Assembly Program