At the completion of this critical bibliography which forms another step in the direction of the realization of the bibliographical project inaugurated in 1955 by Dr. Voorhoeve's survey of the languages of Sumatra, I acknowledge with gratitude the valuable assistance received from various people. I am indebted to my colleagues Prof. Dr. G. W. J. Drewes, Dr. J. Noorduyn, Dr. Th. Pigeaud, Prof. Dr. A. Teeuw and Dr. P. Voorhoeve, who read all or part of the manuscript and who generously put their extensive knowledge of the Java languages at my disposal. Heartfelt thanks are due to Mr. B. J. Hoff and Mr. A. G. Sciarone,