Two IBM assembly programs (9.2) pp323-333

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 ASSEMBLY {1951} Rochester Asssembler for IBM SO 2 {1952} Symbolic assembler for IBM 701