1. Origin of APL a videotape prepared by John Clark for the Fourth APL Conference 1974 with the participation with the participation with the participation with the participation L. M. and R. D. Moore. Available from Orange Coast Community College Costa Mesa California.]] Origin of APL a videotape prepared by John Clark for the Fourth APL Conference 1974 with the participation of P. S. Abrams L. M. Breed A. D. Falkoff K. E. Iverson and R. D. Moore. Available from Orange Coast Community College Costa Mesa California.]]
2. White Plains New York White Plains A. D. Falkoff K. E. Iverson APL Language Form No. GC26-3847 IBM Corp 1975